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_log.h"
  20 #include "sfc_switch.h"
  21
  22 static int
  23 sfc_mae_assign_entity_mport(struct sfc_adapter *sa,
  24                             efx_mport_sel_t *mportp)
  25 {
  26         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
  27
  28         return efx_mae_mport_by_pcie_function(encp->enc_pf, encp->enc_vf,
  29                                               mportp);
  30 }
  31
  32 int
  33 sfc_mae_attach(struct sfc_adapter *sa)
  34 {
  35         struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
  36         struct sfc_mae_switch_port_request switch_port_request = {0};
  37         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
  38         efx_mport_sel_t entity_mport;
  39         struct sfc_mae *mae = &sa->mae;
  40         struct sfc_mae_bounce_eh *bounce_eh = &mae->bounce_eh;
  41         efx_mae_limits_t limits;
  42         int rc;
  43
  44         sfc_log_init(sa, "entry");
  45
  46         if (!encp->enc_mae_supported) {
  47                 mae->status = SFC_MAE_STATUS_UNSUPPORTED;
  48                 return 0;
  49         }
  50
  51         sfc_log_init(sa, "init MAE");
  52         rc = efx_mae_init(sa->nic);
  53         if (rc != 0)
  54                 goto fail_mae_init;
  55
  56         sfc_log_init(sa, "get MAE limits");
  57         rc = efx_mae_get_limits(sa->nic, &limits);
  58         if (rc != 0)
  59                 goto fail_mae_get_limits;
  60
  61         sfc_log_init(sa, "assign entity MPORT");
  62         rc = sfc_mae_assign_entity_mport(sa, &entity_mport);
  63         if (rc != 0)
  64                 goto fail_mae_assign_entity_mport;
  65
  66         sfc_log_init(sa, "assign RTE switch domain");
  67         rc = sfc_mae_assign_switch_domain(sa, &mae->switch_domain_id);
  68         if (rc != 0)
  69                 goto fail_mae_assign_switch_domain;
  70
  71         sfc_log_init(sa, "assign RTE switch port");
  72         switch_port_request.type = SFC_MAE_SWITCH_PORT_INDEPENDENT;
  73         switch_port_request.entity_mportp = &entity_mport;
  74         /*
  75          * As of now, the driver does not support representors, so
  76          * RTE ethdev MPORT simply matches that of the entity.
  77          */
  78         switch_port_request.ethdev_mportp = &entity_mport;
  79         switch_port_request.ethdev_port_id = sas->port_id;
  80         rc = sfc_mae_assign_switch_port(mae->switch_domain_id,
  81                                         &switch_port_request,
  82                                         &mae->switch_port_id);
  83         if (rc != 0)
  84                 goto fail_mae_assign_switch_port;
  85
  86         sfc_log_init(sa, "allocate encap. header bounce buffer");
  87         bounce_eh->buf_size = limits.eml_encap_header_size_limit;
  88         bounce_eh->buf = rte_malloc("sfc_mae_bounce_eh",
  89                                     bounce_eh->buf_size, 0);
  90         if (bounce_eh->buf == NULL)
  91                 goto fail_mae_alloc_bounce_eh;
  92
  93         mae->status = SFC_MAE_STATUS_SUPPORTED;
  94         mae->nb_outer_rule_prios_max = limits.eml_max_n_outer_prios;
  95         mae->nb_action_rule_prios_max = limits.eml_max_n_action_prios;
  96         mae->encap_types_supported = limits.eml_encap_types_supported;
  97         TAILQ_INIT(&mae->outer_rules);
  98         TAILQ_INIT(&mae->encap_headers);
  99         TAILQ_INIT(&mae->action_sets);
 100
 101         sfc_log_init(sa, "done");
 102
 103         return 0;
 104
 105 fail_mae_alloc_bounce_eh:
 106 fail_mae_assign_switch_port:
 107 fail_mae_assign_switch_domain:
 108 fail_mae_assign_entity_mport:
 109 fail_mae_get_limits:
 110         efx_mae_fini(sa->nic);
 111
 112 fail_mae_init:
 113         sfc_log_init(sa, "failed %d", rc);
 114
 115         return rc;
 116 }
 117
 118 void
 119 sfc_mae_detach(struct sfc_adapter *sa)
 120 {
 121         struct sfc_mae *mae = &sa->mae;
 122         enum sfc_mae_status status_prev = mae->status;
 123
 124         sfc_log_init(sa, "entry");
 125
 126         mae->nb_action_rule_prios_max = 0;
 127         mae->status = SFC_MAE_STATUS_UNKNOWN;
 128
 129         if (status_prev != SFC_MAE_STATUS_SUPPORTED)
 130                 return;
 131
 132         rte_free(mae->bounce_eh.buf);
 133
 134         efx_mae_fini(sa->nic);
 135
 136         sfc_log_init(sa, "done");
 137 }
 138
 139 static struct sfc_mae_outer_rule *
 140 sfc_mae_outer_rule_attach(struct sfc_adapter *sa,
 141                           const efx_mae_match_spec_t *match_spec,
 142                           efx_tunnel_protocol_t encap_type)
 143 {
 144         struct sfc_mae_outer_rule *rule;
 145         struct sfc_mae *mae = &sa->mae;
 146
 147         SFC_ASSERT(sfc_adapter_is_locked(sa));
 148
 149         TAILQ_FOREACH(rule, &mae->outer_rules, entries) {
 150                 if (efx_mae_match_specs_equal(rule->match_spec, match_spec) &&
 151                     rule->encap_type == encap_type) {
 152                         sfc_dbg(sa, "attaching to outer_rule=%p", rule);
 153                         ++(rule->refcnt);
 154                         return rule;
 155                 }
 156         }
 157
 158         return NULL;
 159 }
 160
 161 static int
 162 sfc_mae_outer_rule_add(struct sfc_adapter *sa,
 163                        efx_mae_match_spec_t *match_spec,
 164                        efx_tunnel_protocol_t encap_type,
 165                        struct sfc_mae_outer_rule **rulep)
 166 {
 167         struct sfc_mae_outer_rule *rule;
 168         struct sfc_mae *mae = &sa->mae;
 169
 170         SFC_ASSERT(sfc_adapter_is_locked(sa));
 171
 172         rule = rte_zmalloc("sfc_mae_outer_rule", sizeof(*rule), 0);
 173         if (rule == NULL)
 174                 return ENOMEM;
 175
 176         rule->refcnt = 1;
 177         rule->match_spec = match_spec;
 178         rule->encap_type = encap_type;
 179
 180         rule->fw_rsrc.rule_id.id = EFX_MAE_RSRC_ID_INVALID;
 181
 182         TAILQ_INSERT_TAIL(&mae->outer_rules, rule, entries);
 183
 184         *rulep = rule;
 185
 186         sfc_dbg(sa, "added outer_rule=%p", rule);
 187
 188         return 0;
 189 }
 190
 191 static void
 192 sfc_mae_outer_rule_del(struct sfc_adapter *sa,
 193                        struct sfc_mae_outer_rule *rule)
 194 {
 195         struct sfc_mae *mae = &sa->mae;
 196
 197         SFC_ASSERT(sfc_adapter_is_locked(sa));
 198         SFC_ASSERT(rule->refcnt != 0);
 199
 200         --(rule->refcnt);
 201
 202         if (rule->refcnt != 0)
 203                 return;
 204
 205         if (rule->fw_rsrc.rule_id.id != EFX_MAE_RSRC_ID_INVALID ||
 206             rule->fw_rsrc.refcnt != 0) {
 207                 sfc_err(sa, "deleting outer_rule=%p abandons its FW resource: OR_ID=0x%08x, refcnt=%u",
 208                         rule, rule->fw_rsrc.rule_id.id, rule->fw_rsrc.refcnt);
 209         }
 210
 211         efx_mae_match_spec_fini(sa->nic, rule->match_spec);
 212
 213         TAILQ_REMOVE(&mae->outer_rules, rule, entries);
 214         rte_free(rule);
 215
 216         sfc_dbg(sa, "deleted outer_rule=%p", rule);
 217 }
 218
 219 static int
 220 sfc_mae_outer_rule_enable(struct sfc_adapter *sa,
 221                           struct sfc_mae_outer_rule *rule,
 222                           efx_mae_match_spec_t *match_spec_action)
 223 {
 224         struct sfc_mae_fw_rsrc *fw_rsrc = &rule->fw_rsrc;
 225         int rc;
 226
 227         SFC_ASSERT(sfc_adapter_is_locked(sa));
 228
 229         if (fw_rsrc->refcnt == 0) {
 230                 SFC_ASSERT(fw_rsrc->rule_id.id == EFX_MAE_RSRC_ID_INVALID);
 231                 SFC_ASSERT(rule->match_spec != NULL);
 232
 233                 rc = efx_mae_outer_rule_insert(sa->nic, rule->match_spec,
 234                                                rule->encap_type,
 235                                                &fw_rsrc->rule_id);
 236                 if (rc != 0) {
 237                         sfc_err(sa, "failed to enable outer_rule=%p: %s",
 238                                 rule, strerror(rc));
 239                         return rc;
 240                 }
 241         }
 242
 243         rc = efx_mae_match_spec_outer_rule_id_set(match_spec_action,
 244                                                   &fw_rsrc->rule_id);
 245         if (rc != 0) {
 246                 if (fw_rsrc->refcnt == 0) {
 247                         (void)efx_mae_outer_rule_remove(sa->nic,
 248                                                         &fw_rsrc->rule_id);
 249                         fw_rsrc->rule_id.id = EFX_MAE_RSRC_ID_INVALID;
 250                 }
 251
 252                 sfc_err(sa, "can't match on outer rule ID: %s", strerror(rc));
 253
 254                 return rc;
 255         }
 256
 257         if (fw_rsrc->refcnt == 0) {
 258                 sfc_dbg(sa, "enabled outer_rule=%p: OR_ID=0x%08x",
 259                         rule, fw_rsrc->rule_id.id);
 260         }
 261
 262         ++(fw_rsrc->refcnt);
 263
 264         return 0;
 265 }
 266
 267 static void
 268 sfc_mae_outer_rule_disable(struct sfc_adapter *sa,
 269                            struct sfc_mae_outer_rule *rule)
 270 {
 271         struct sfc_mae_fw_rsrc *fw_rsrc = &rule->fw_rsrc;
 272         int rc;
 273
 274         SFC_ASSERT(sfc_adapter_is_locked(sa));
 275
 276         if (fw_rsrc->rule_id.id == EFX_MAE_RSRC_ID_INVALID ||
 277             fw_rsrc->refcnt == 0) {
 278                 sfc_err(sa, "failed to disable outer_rule=%p: already disabled; OR_ID=0x%08x, refcnt=%u",
 279                         rule, fw_rsrc->rule_id.id, fw_rsrc->refcnt);
 280                 return;
 281         }
 282
 283         if (fw_rsrc->refcnt == 1) {
 284                 rc = efx_mae_outer_rule_remove(sa->nic, &fw_rsrc->rule_id);
 285                 if (rc == 0) {
 286                         sfc_dbg(sa, "disabled outer_rule=%p with OR_ID=0x%08x",
 287                                 rule, fw_rsrc->rule_id.id);
 288                 } else {
 289                         sfc_err(sa, "failed to disable outer_rule=%p with OR_ID=0x%08x: %s",
 290                                 rule, fw_rsrc->rule_id.id, strerror(rc));
 291                 }
 292                 fw_rsrc->rule_id.id = EFX_MAE_RSRC_ID_INVALID;
 293         }
 294
 295         --(fw_rsrc->refcnt);
 296 }
 297
 298 static struct sfc_mae_encap_header *
 299 sfc_mae_encap_header_attach(struct sfc_adapter *sa,
 300                             const struct sfc_mae_bounce_eh *bounce_eh)
 301 {
 302         struct sfc_mae_encap_header *encap_header;
 303         struct sfc_mae *mae = &sa->mae;
 304
 305         SFC_ASSERT(sfc_adapter_is_locked(sa));
 306
 307         TAILQ_FOREACH(encap_header, &mae->encap_headers, entries) {
 308                 if (encap_header->size == bounce_eh->size &&
 309                     memcmp(encap_header->buf, bounce_eh->buf,
 310                            bounce_eh->size) == 0) {
 311                         sfc_dbg(sa, "attaching to encap_header=%p",
 312                                 encap_header);
 313                         ++(encap_header->refcnt);
 314                         return encap_header;
 315                 }
 316         }
 317
 318         return NULL;
 319 }
 320
 321 static int
 322 sfc_mae_encap_header_add(struct sfc_adapter *sa,
 323                          const struct sfc_mae_bounce_eh *bounce_eh,
 324                          struct sfc_mae_encap_header **encap_headerp)
 325 {
 326         struct sfc_mae_encap_header *encap_header;
 327         struct sfc_mae *mae = &sa->mae;
 328
 329         SFC_ASSERT(sfc_adapter_is_locked(sa));
 330
 331         encap_header = rte_zmalloc("sfc_mae_encap_header",
 332                                    sizeof(*encap_header), 0);
 333         if (encap_header == NULL)
 334                 return ENOMEM;
 335
 336         encap_header->size = bounce_eh->size;
 337
 338         encap_header->buf = rte_malloc("sfc_mae_encap_header_buf",
 339                                        encap_header->size, 0);
 340         if (encap_header->buf == NULL) {
 341                 rte_free(encap_header);
 342                 return ENOMEM;
 343         }
 344
 345         rte_memcpy(encap_header->buf, bounce_eh->buf, bounce_eh->size);
 346
 347         encap_header->refcnt = 1;
 348         encap_header->type = bounce_eh->type;
 349         encap_header->fw_rsrc.eh_id.id = EFX_MAE_RSRC_ID_INVALID;
 350
 351         TAILQ_INSERT_TAIL(&mae->encap_headers, encap_header, entries);
 352
 353         *encap_headerp = encap_header;
 354
 355         sfc_dbg(sa, "added encap_header=%p", encap_header);
 356
 357         return 0;
 358 }
 359
 360 static void
 361 sfc_mae_encap_header_del(struct sfc_adapter *sa,
 362                        struct sfc_mae_encap_header *encap_header)
 363 {
 364         struct sfc_mae *mae = &sa->mae;
 365
 366         if (encap_header == NULL)
 367                 return;
 368
 369         SFC_ASSERT(sfc_adapter_is_locked(sa));
 370         SFC_ASSERT(encap_header->refcnt != 0);
 371
 372         --(encap_header->refcnt);
 373
 374         if (encap_header->refcnt != 0)
 375                 return;
 376
 377         if (encap_header->fw_rsrc.eh_id.id != EFX_MAE_RSRC_ID_INVALID ||
 378             encap_header->fw_rsrc.refcnt != 0) {
 379                 sfc_err(sa, "deleting encap_header=%p abandons its FW resource: EH_ID=0x%08x, refcnt=%u",
 380                         encap_header, encap_header->fw_rsrc.eh_id.id,
 381                         encap_header->fw_rsrc.refcnt);
 382         }
 383
 384         TAILQ_REMOVE(&mae->encap_headers, encap_header, entries);
 385         rte_free(encap_header->buf);
 386         rte_free(encap_header);
 387
 388         sfc_dbg(sa, "deleted encap_header=%p", encap_header);
 389 }
 390
 391 static int
 392 sfc_mae_encap_header_enable(struct sfc_adapter *sa,
 393                             struct sfc_mae_encap_header *encap_header,
 394                             efx_mae_actions_t *action_set_spec)
 395 {
 396         struct sfc_mae_fw_rsrc *fw_rsrc;
 397         int rc;
 398
 399         if (encap_header == NULL)
 400                 return 0;
 401
 402         SFC_ASSERT(sfc_adapter_is_locked(sa));
 403
 404         fw_rsrc = &encap_header->fw_rsrc;
 405
 406         if (fw_rsrc->refcnt == 0) {
 407                 SFC_ASSERT(fw_rsrc->eh_id.id == EFX_MAE_RSRC_ID_INVALID);
 408                 SFC_ASSERT(encap_header->buf != NULL);
 409                 SFC_ASSERT(encap_header->size != 0);
 410
 411                 rc = efx_mae_encap_header_alloc(sa->nic, encap_header->type,
 412                                                 encap_header->buf,
 413                                                 encap_header->size,
 414                                                 &fw_rsrc->eh_id);
 415                 if (rc != 0) {
 416                         sfc_err(sa, "failed to enable encap_header=%p: %s",
 417                                 encap_header, strerror(rc));
 418                         return rc;
 419                 }
 420         }
 421
 422         rc = efx_mae_action_set_fill_in_eh_id(action_set_spec,
 423                                               &fw_rsrc->eh_id);
 424         if (rc != 0) {
 425                 if (fw_rsrc->refcnt == 0) {
 426                         (void)efx_mae_encap_header_free(sa->nic,
 427                                                         &fw_rsrc->eh_id);
 428                         fw_rsrc->eh_id.id = EFX_MAE_RSRC_ID_INVALID;
 429                 }
 430
 431                 sfc_err(sa, "can't fill in encap. header ID: %s", strerror(rc));
 432
 433                 return rc;
 434         }
 435
 436         if (fw_rsrc->refcnt == 0) {
 437                 sfc_dbg(sa, "enabled encap_header=%p: EH_ID=0x%08x",
 438                         encap_header, fw_rsrc->eh_id.id);
 439         }
 440
 441         ++(fw_rsrc->refcnt);
 442
 443         return 0;
 444 }
 445
 446 static void
 447 sfc_mae_encap_header_disable(struct sfc_adapter *sa,
 448                              struct sfc_mae_encap_header *encap_header)
 449 {
 450         struct sfc_mae_fw_rsrc *fw_rsrc;
 451         int rc;
 452
 453         if (encap_header == NULL)
 454                 return;
 455
 456         SFC_ASSERT(sfc_adapter_is_locked(sa));
 457
 458         fw_rsrc = &encap_header->fw_rsrc;
 459
 460         if (fw_rsrc->eh_id.id == EFX_MAE_RSRC_ID_INVALID ||
 461             fw_rsrc->refcnt == 0) {
 462                 sfc_err(sa, "failed to disable encap_header=%p: already disabled; EH_ID=0x%08x, refcnt=%u",
 463                         encap_header, fw_rsrc->eh_id.id, fw_rsrc->refcnt);
 464                 return;
 465         }
 466
 467         if (fw_rsrc->refcnt == 1) {
 468                 rc = efx_mae_encap_header_free(sa->nic, &fw_rsrc->eh_id);
 469                 if (rc == 0) {
 470                         sfc_dbg(sa, "disabled encap_header=%p with EH_ID=0x%08x",
 471                                 encap_header, fw_rsrc->eh_id.id);
 472                 } else {
 473                         sfc_err(sa, "failed to disable encap_header=%p with EH_ID=0x%08x: %s",
 474                                 encap_header, fw_rsrc->eh_id.id, strerror(rc));
 475                 }
 476                 fw_rsrc->eh_id.id = EFX_MAE_RSRC_ID_INVALID;
 477         }
 478
 479         --(fw_rsrc->refcnt);
 480 }
 481
 482 static struct sfc_mae_action_set *
 483 sfc_mae_action_set_attach(struct sfc_adapter *sa,
 484                           const struct sfc_mae_encap_header *encap_header,
 485                           const efx_mae_actions_t *spec)
 486 {
 487         struct sfc_mae_action_set *action_set;
 488         struct sfc_mae *mae = &sa->mae;
 489
 490         SFC_ASSERT(sfc_adapter_is_locked(sa));
 491
 492         TAILQ_FOREACH(action_set, &mae->action_sets, entries) {
 493                 if (action_set->encap_header == encap_header &&
 494                     efx_mae_action_set_specs_equal(action_set->spec, spec)) {
 495                         sfc_dbg(sa, "attaching to action_set=%p", action_set);
 496                         ++(action_set->refcnt);
 497                         return action_set;
 498                 }
 499         }
 500
 501         return NULL;
 502 }
 503
 504 static int
 505 sfc_mae_action_set_add(struct sfc_adapter *sa,
 506                        efx_mae_actions_t *spec,
 507                        struct sfc_mae_encap_header *encap_header,
 508                        struct sfc_mae_action_set **action_setp)
 509 {
 510         struct sfc_mae_action_set *action_set;
 511         struct sfc_mae *mae = &sa->mae;
 512
 513         SFC_ASSERT(sfc_adapter_is_locked(sa));
 514
 515         action_set = rte_zmalloc("sfc_mae_action_set", sizeof(*action_set), 0);
 516         if (action_set == NULL)
 517                 return ENOMEM;
 518
 519         action_set->refcnt = 1;
 520         action_set->spec = spec;
 521         action_set->encap_header = encap_header;
 522
 523         action_set->fw_rsrc.aset_id.id = EFX_MAE_RSRC_ID_INVALID;
 524
 525         TAILQ_INSERT_TAIL(&mae->action_sets, action_set, entries);
 526
 527         *action_setp = action_set;
 528
 529         sfc_dbg(sa, "added action_set=%p", action_set);
 530
 531         return 0;
 532 }
 533
 534 static void
 535 sfc_mae_action_set_del(struct sfc_adapter *sa,
 536                        struct sfc_mae_action_set *action_set)
 537 {
 538         struct sfc_mae *mae = &sa->mae;
 539
 540         SFC_ASSERT(sfc_adapter_is_locked(sa));
 541         SFC_ASSERT(action_set->refcnt != 0);
 542
 543         --(action_set->refcnt);
 544
 545         if (action_set->refcnt != 0)
 546                 return;
 547
 548         if (action_set->fw_rsrc.aset_id.id != EFX_MAE_RSRC_ID_INVALID ||
 549             action_set->fw_rsrc.refcnt != 0) {
 550                 sfc_err(sa, "deleting action_set=%p abandons its FW resource: AS_ID=0x%08x, refcnt=%u",
 551                         action_set, action_set->fw_rsrc.aset_id.id,
 552                         action_set->fw_rsrc.refcnt);
 553         }
 554
 555         efx_mae_action_set_spec_fini(sa->nic, action_set->spec);
 556         sfc_mae_encap_header_del(sa, action_set->encap_header);
 557         TAILQ_REMOVE(&mae->action_sets, action_set, entries);
 558         rte_free(action_set);
 559
 560         sfc_dbg(sa, "deleted action_set=%p", action_set);
 561 }
 562
 563 static int
 564 sfc_mae_action_set_enable(struct sfc_adapter *sa,
 565                           struct sfc_mae_action_set *action_set)
 566 {
 567         struct sfc_mae_encap_header *encap_header = action_set->encap_header;
 568         struct sfc_mae_fw_rsrc *fw_rsrc = &action_set->fw_rsrc;
 569         int rc;
 570
 571         SFC_ASSERT(sfc_adapter_is_locked(sa));
 572
 573         if (fw_rsrc->refcnt == 0) {
 574                 SFC_ASSERT(fw_rsrc->aset_id.id == EFX_MAE_RSRC_ID_INVALID);
 575                 SFC_ASSERT(action_set->spec != NULL);
 576
 577                 rc = sfc_mae_encap_header_enable(sa, encap_header,
 578                                                  action_set->spec);
 579                 if (rc != 0)
 580                         return rc;
 581
 582                 rc = efx_mae_action_set_alloc(sa->nic, action_set->spec,
 583                                               &fw_rsrc->aset_id);
 584                 if (rc != 0) {
 585                         sfc_mae_encap_header_disable(sa, encap_header);
 586
 587                         sfc_err(sa, "failed to enable action_set=%p: %s",
 588                                 action_set, strerror(rc));
 589
 590                         return rc;
 591                 }
 592
 593                 sfc_dbg(sa, "enabled action_set=%p: AS_ID=0x%08x",
 594                         action_set, fw_rsrc->aset_id.id);
 595         }
 596
 597         ++(fw_rsrc->refcnt);
 598
 599         return 0;
 600 }
 601
 602 static void
 603 sfc_mae_action_set_disable(struct sfc_adapter *sa,
 604                            struct sfc_mae_action_set *action_set)
 605 {
 606         struct sfc_mae_fw_rsrc *fw_rsrc = &action_set->fw_rsrc;
 607         int rc;
 608
 609         SFC_ASSERT(sfc_adapter_is_locked(sa));
 610
 611         if (fw_rsrc->aset_id.id == EFX_MAE_RSRC_ID_INVALID ||
 612             fw_rsrc->refcnt == 0) {
 613                 sfc_err(sa, "failed to disable action_set=%p: already disabled; AS_ID=0x%08x, refcnt=%u",
 614                         action_set, fw_rsrc->aset_id.id, fw_rsrc->refcnt);
 615                 return;
 616         }
 617
 618         if (fw_rsrc->refcnt == 1) {
 619                 rc = efx_mae_action_set_free(sa->nic, &fw_rsrc->aset_id);
 620                 if (rc == 0) {
 621                         sfc_dbg(sa, "disabled action_set=%p with AS_ID=0x%08x",
 622                                 action_set, fw_rsrc->aset_id.id);
 623                 } else {
 624                         sfc_err(sa, "failed to disable action_set=%p with AS_ID=0x%08x: %s",
 625                                 action_set, fw_rsrc->aset_id.id, strerror(rc));
 626                 }
 627                 fw_rsrc->aset_id.id = EFX_MAE_RSRC_ID_INVALID;
 628
 629                 sfc_mae_encap_header_disable(sa, action_set->encap_header);
 630         }
 631
 632         --(fw_rsrc->refcnt);
 633 }
 634
 635 void
 636 sfc_mae_flow_cleanup(struct sfc_adapter *sa,
 637                      struct rte_flow *flow)
 638 {
 639         struct sfc_flow_spec *spec;
 640         struct sfc_flow_spec_mae *spec_mae;
 641
 642         if (flow == NULL)
 643                 return;
 644
 645         spec = &flow->spec;
 646
 647         if (spec == NULL)
 648                 return;
 649
 650         spec_mae = &spec->mae;
 651
 652         SFC_ASSERT(spec_mae->rule_id.id == EFX_MAE_RSRC_ID_INVALID);
 653
 654         if (spec_mae->outer_rule != NULL)
 655                 sfc_mae_outer_rule_del(sa, spec_mae->outer_rule);
 656
 657         if (spec_mae->action_set != NULL)
 658                 sfc_mae_action_set_del(sa, spec_mae->action_set);
 659
 660         if (spec_mae->match_spec != NULL)
 661                 efx_mae_match_spec_fini(sa->nic, spec_mae->match_spec);
 662 }
 663
 664 static int
 665 sfc_mae_set_ethertypes(struct sfc_mae_parse_ctx *ctx)
 666 {
 667         struct sfc_mae_pattern_data *pdata = &ctx->pattern_data;
 668         const efx_mae_field_id_t *fremap = ctx->field_ids_remap;
 669         const efx_mae_field_id_t field_ids[] = {
 670                 EFX_MAE_FIELD_VLAN0_PROTO_BE,
 671                 EFX_MAE_FIELD_VLAN1_PROTO_BE,
 672         };
 673         const struct sfc_mae_ethertype *et;
 674         unsigned int i;
 675         int rc;
 676
 677         /*
 678          * In accordance with RTE flow API convention, the innermost L2
 679          * item's "type" ("inner_type") is a L3 EtherType. If there is
 680          * no L3 item, it's 0x0000/0x0000.
 681          */
 682         et = &pdata->ethertypes[pdata->nb_vlan_tags];
 683         rc = efx_mae_match_spec_field_set(ctx->match_spec,
 684                                           fremap[EFX_MAE_FIELD_ETHER_TYPE_BE],
 685                                           sizeof(et->value),
 686                                           (const uint8_t *)&et->value,
 687                                           sizeof(et->mask),
 688                                           (const uint8_t *)&et->mask);
 689         if (rc != 0)
 690                 return rc;
 691
 692         /*
 693          * sfc_mae_rule_parse_item_vlan() has already made sure
 694          * that pdata->nb_vlan_tags does not exceed this figure.
 695          */
 696         RTE_BUILD_BUG_ON(SFC_MAE_MATCH_VLAN_MAX_NTAGS != 2);
 697
 698         for (i = 0; i < pdata->nb_vlan_tags; ++i) {
 699                 et = &pdata->ethertypes[i];
 700
 701                 rc = efx_mae_match_spec_field_set(ctx->match_spec,
 702                                                   fremap[field_ids[i]],
 703                                                   sizeof(et->value),
 704                                                   (const uint8_t *)&et->value,
 705                                                   sizeof(et->mask),
 706                                                   (const uint8_t *)&et->mask);
 707                 if (rc != 0)
 708                         return rc;
 709         }
 710
 711         return 0;
 712 }
 713
 714 static int
 715 sfc_mae_rule_process_pattern_data(struct sfc_mae_parse_ctx *ctx,
 716                                   struct rte_flow_error *error)
 717 {
 718         const efx_mae_field_id_t *fremap = ctx->field_ids_remap;
 719         struct sfc_mae_pattern_data *pdata = &ctx->pattern_data;
 720         struct sfc_mae_ethertype *ethertypes = pdata->ethertypes;
 721         const rte_be16_t supported_tpids[] = {
 722                 /* VLAN standard TPID (always the first element) */
 723                 RTE_BE16(RTE_ETHER_TYPE_VLAN),
 724
 725                 /* Double-tagging TPIDs */
 726                 RTE_BE16(RTE_ETHER_TYPE_QINQ),
 727                 RTE_BE16(RTE_ETHER_TYPE_QINQ1),
 728                 RTE_BE16(RTE_ETHER_TYPE_QINQ2),
 729                 RTE_BE16(RTE_ETHER_TYPE_QINQ3),
 730         };
 731         bool enforce_tag_presence[SFC_MAE_MATCH_VLAN_MAX_NTAGS] = {0};
 732         unsigned int nb_supported_tpids = RTE_DIM(supported_tpids);
 733         unsigned int ethertype_idx;
 734         const uint8_t *valuep;
 735         const uint8_t *maskp;
 736         int rc;
 737
 738         if (pdata->innermost_ethertype_restriction.mask != 0 &&
 739             pdata->nb_vlan_tags < SFC_MAE_MATCH_VLAN_MAX_NTAGS) {
 740                 /*
 741                  * If a single item VLAN is followed by a L3 item, value
 742                  * of "type" in item ETH can't be a double-tagging TPID.
 743                  */
 744                 nb_supported_tpids = 1;
 745         }
 746
 747         /*
 748          * sfc_mae_rule_parse_item_vlan() has already made sure
 749          * that pdata->nb_vlan_tags does not exceed this figure.
 750          */
 751         RTE_BUILD_BUG_ON(SFC_MAE_MATCH_VLAN_MAX_NTAGS != 2);
 752
 753         for (ethertype_idx = 0;
 754              ethertype_idx < pdata->nb_vlan_tags; ++ethertype_idx) {
 755                 unsigned int tpid_idx;
 756
 757                 /*
 758                  * This loop can have only two iterations. On the second one,
 759                  * drop outer tag presence enforcement bit because the inner
 760                  * tag presence automatically assumes that for the outer tag.
 761                  */
 762                 enforce_tag_presence[0] = B_FALSE;
 763
 764                 if (ethertypes[ethertype_idx].mask == RTE_BE16(0)) {
 765                         if (pdata->tci_masks[ethertype_idx] == RTE_BE16(0))
 766                                 enforce_tag_presence[ethertype_idx] = B_TRUE;
 767
 768                         /* No match on this field, and no value check. */
 769                         nb_supported_tpids = 1;
 770                         continue;
 771                 }
 772
 773                 /* Exact match is supported only. */
 774                 if (ethertypes[ethertype_idx].mask != RTE_BE16(0xffff)) {
 775                         rc = EINVAL;
 776                         goto fail;
 777                 }
 778
 779                 for (tpid_idx = pdata->nb_vlan_tags - ethertype_idx - 1;
 780                      tpid_idx < nb_supported_tpids; ++tpid_idx) {
 781                         if (ethertypes[ethertype_idx].value ==
 782                             supported_tpids[tpid_idx])
 783                                 break;
 784                 }
 785
 786                 if (tpid_idx == nb_supported_tpids) {
 787                         rc = EINVAL;
 788                         goto fail;
 789                 }
 790
 791                 nb_supported_tpids = 1;
 792         }
 793
 794         if (pdata->innermost_ethertype_restriction.mask == RTE_BE16(0xffff)) {
 795                 struct sfc_mae_ethertype *et = &ethertypes[ethertype_idx];
 796
 797                 if (et->mask == 0) {
 798                         et->mask = RTE_BE16(0xffff);
 799                         et->value =
 800                             pdata->innermost_ethertype_restriction.value;
 801                 } else if (et->mask != RTE_BE16(0xffff) ||
 802                            et->value !=
 803                            pdata->innermost_ethertype_restriction.value) {
 804                         rc = EINVAL;
 805                         goto fail;
 806                 }
 807         }
 808
 809         /*
 810          * Now, when the number of VLAN tags is known, set fields
 811          * ETHER_TYPE, VLAN0_PROTO and VLAN1_PROTO so that the first
 812          * one is either a valid L3 EtherType (or 0x0000/0x0000),
 813          * and the last two are valid TPIDs (or 0x0000/0x0000).
 814          */
 815         rc = sfc_mae_set_ethertypes(ctx);
 816         if (rc != 0)
 817                 goto fail;
 818
 819         if (pdata->l3_next_proto_restriction_mask == 0xff) {
 820                 if (pdata->l3_next_proto_mask == 0) {
 821                         pdata->l3_next_proto_mask = 0xff;
 822                         pdata->l3_next_proto_value =
 823                             pdata->l3_next_proto_restriction_value;
 824                 } else if (pdata->l3_next_proto_mask != 0xff ||
 825                            pdata->l3_next_proto_value !=
 826                            pdata->l3_next_proto_restriction_value) {
 827                         rc = EINVAL;
 828                         goto fail;
 829                 }
 830         }
 831
 832         if (enforce_tag_presence[0] || pdata->has_ovlan_mask) {
 833                 rc = efx_mae_match_spec_bit_set(ctx->match_spec,
 834                                                 fremap[EFX_MAE_FIELD_HAS_OVLAN],
 835                                                 enforce_tag_presence[0] ||
 836                                                 pdata->has_ovlan_value);
 837                 if (rc != 0)
 838                         goto fail;
 839         }
 840
 841         if (enforce_tag_presence[1] || pdata->has_ivlan_mask) {
 842                 rc = efx_mae_match_spec_bit_set(ctx->match_spec,
 843                                                 fremap[EFX_MAE_FIELD_HAS_IVLAN],
 844                                                 enforce_tag_presence[1] ||
 845                                                 pdata->has_ivlan_value);
 846                 if (rc != 0)
 847                         goto fail;
 848         }
 849
 850         valuep = (const uint8_t *)&pdata->l3_next_proto_value;
 851         maskp = (const uint8_t *)&pdata->l3_next_proto_mask;
 852         rc = efx_mae_match_spec_field_set(ctx->match_spec,
 853                                           fremap[EFX_MAE_FIELD_IP_PROTO],
 854                                           sizeof(pdata->l3_next_proto_value),
 855                                           valuep,
 856                                           sizeof(pdata->l3_next_proto_mask),
 857                                           maskp);
 858         if (rc != 0)
 859                 goto fail;
 860
 861         return 0;
 862
 863 fail:
 864         return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, NULL,
 865                                   "Failed to process pattern data");
 866 }
 867
 868 static int
 869 sfc_mae_rule_parse_item_port_id(const struct rte_flow_item *item,
 870                                 struct sfc_flow_parse_ctx *ctx,
 871                                 struct rte_flow_error *error)
 872 {
 873         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
 874         const struct rte_flow_item_port_id supp_mask = {
 875                 .id = 0xffffffff,
 876         };
 877         const void *def_mask = &rte_flow_item_port_id_mask;
 878         const struct rte_flow_item_port_id *spec = NULL;
 879         const struct rte_flow_item_port_id *mask = NULL;
 880         efx_mport_sel_t mport_sel;
 881         int rc;
 882
 883         if (ctx_mae->match_mport_set) {
 884                 return rte_flow_error_set(error, ENOTSUP,
 885                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
 886                                 "Can't handle multiple traffic source items");
 887         }
 888
 889         rc = sfc_flow_parse_init(item,
 890                                  (const void **)&spec, (const void **)&mask,
 891                                  (const void *)&supp_mask, def_mask,
 892                                  sizeof(struct rte_flow_item_port_id), error);
 893         if (rc != 0)
 894                 return rc;
 895
 896         if (mask->id != supp_mask.id) {
 897                 return rte_flow_error_set(error, EINVAL,
 898                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
 899                                 "Bad mask in the PORT_ID pattern item");
 900         }
 901
 902         /* If "spec" is not set, could be any port ID */
 903         if (spec == NULL)
 904                 return 0;
 905
 906         if (spec->id > UINT16_MAX) {
 907                 return rte_flow_error_set(error, EOVERFLOW,
 908                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
 909                                           "The port ID is too large");
 910         }
 911
 912         rc = sfc_mae_switch_port_by_ethdev(ctx_mae->sa->mae.switch_domain_id,
 913                                            spec->id, &mport_sel);
 914         if (rc != 0) {
 915                 return rte_flow_error_set(error, rc,
 916                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
 917                                 "Can't find RTE ethdev by the port ID");
 918         }
 919
 920         rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec,
 921                                           &mport_sel, NULL);
 922         if (rc != 0) {
 923                 return rte_flow_error_set(error, rc,
 924                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
 925                                 "Failed to set MPORT for the port ID");
 926         }
 927
 928         ctx_mae->match_mport_set = B_TRUE;
 929
 930         return 0;
 931 }
 932
 933 static int
 934 sfc_mae_rule_parse_item_phy_port(const struct rte_flow_item *item,
 935                                  struct sfc_flow_parse_ctx *ctx,
 936                                  struct rte_flow_error *error)
 937 {
 938         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
 939         const struct rte_flow_item_phy_port supp_mask = {
 940                 .index = 0xffffffff,
 941         };
 942         const void *def_mask = &rte_flow_item_phy_port_mask;
 943         const struct rte_flow_item_phy_port *spec = NULL;
 944         const struct rte_flow_item_phy_port *mask = NULL;
 945         efx_mport_sel_t mport_v;
 946         int rc;
 947
 948         if (ctx_mae->match_mport_set) {
 949                 return rte_flow_error_set(error, ENOTSUP,
 950                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
 951                                 "Can't handle multiple traffic source items");
 952         }
 953
 954         rc = sfc_flow_parse_init(item,
 955                                  (const void **)&spec, (const void **)&mask,
 956                                  (const void *)&supp_mask, def_mask,
 957                                  sizeof(struct rte_flow_item_phy_port), error);
 958         if (rc != 0)
 959                 return rc;
 960
 961         if (mask->index != supp_mask.index) {
 962                 return rte_flow_error_set(error, EINVAL,
 963                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
 964                                 "Bad mask in the PHY_PORT pattern item");
 965         }
 966
 967         /* If "spec" is not set, could be any physical port */
 968         if (spec == NULL)
 969                 return 0;
 970
 971         rc = efx_mae_mport_by_phy_port(spec->index, &mport_v);
 972         if (rc != 0) {
 973                 return rte_flow_error_set(error, rc,
 974                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
 975                                 "Failed to convert the PHY_PORT index");
 976         }
 977
 978         rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec, &mport_v, NULL);
 979         if (rc != 0) {
 980                 return rte_flow_error_set(error, rc,
 981                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
 982                                 "Failed to set MPORT for the PHY_PORT");
 983         }
 984
 985         ctx_mae->match_mport_set = B_TRUE;
 986
 987         return 0;
 988 }
 989
 990 static int
 991 sfc_mae_rule_parse_item_pf(const struct rte_flow_item *item,
 992                            struct sfc_flow_parse_ctx *ctx,
 993                            struct rte_flow_error *error)
 994 {
 995         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
 996         const efx_nic_cfg_t *encp = efx_nic_cfg_get(ctx_mae->sa->nic);
 997         efx_mport_sel_t mport_v;
 998         int rc;
 999
1000         if (ctx_mae->match_mport_set) {
1001                 return rte_flow_error_set(error, ENOTSUP,
1002                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1003                                 "Can't handle multiple traffic source items");
1004         }
1005
1006         rc = efx_mae_mport_by_pcie_function(encp->enc_pf, EFX_PCI_VF_INVALID,
1007                                             &mport_v);
1008         if (rc != 0) {
1009                 return rte_flow_error_set(error, rc,
1010                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1011                                 "Failed to convert the PF ID");
1012         }
1013
1014         rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec, &mport_v, NULL);
1015         if (rc != 0) {
1016                 return rte_flow_error_set(error, rc,
1017                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1018                                 "Failed to set MPORT for the PF");
1019         }
1020
1021         ctx_mae->match_mport_set = B_TRUE;
1022
1023         return 0;
1024 }
1025
1026 static int
1027 sfc_mae_rule_parse_item_vf(const struct rte_flow_item *item,
1028                            struct sfc_flow_parse_ctx *ctx,
1029                            struct rte_flow_error *error)
1030 {
1031         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1032         const efx_nic_cfg_t *encp = efx_nic_cfg_get(ctx_mae->sa->nic);
1033         const struct rte_flow_item_vf supp_mask = {
1034                 .id = 0xffffffff,
1035         };
1036         const void *def_mask = &rte_flow_item_vf_mask;
1037         const struct rte_flow_item_vf *spec = NULL;
1038         const struct rte_flow_item_vf *mask = NULL;
1039         efx_mport_sel_t mport_v;
1040         int rc;
1041
1042         if (ctx_mae->match_mport_set) {
1043                 return rte_flow_error_set(error, ENOTSUP,
1044                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1045                                 "Can't handle multiple traffic source items");
1046         }
1047
1048         rc = sfc_flow_parse_init(item,
1049                                  (const void **)&spec, (const void **)&mask,
1050                                  (const void *)&supp_mask, def_mask,
1051                                  sizeof(struct rte_flow_item_vf), error);
1052         if (rc != 0)
1053                 return rc;
1054
1055         if (mask->id != supp_mask.id) {
1056                 return rte_flow_error_set(error, EINVAL,
1057                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1058                                 "Bad mask in the VF pattern item");
1059         }
1060
1061         /*
1062          * If "spec" is not set, the item requests any VF related to the
1063          * PF of the current DPDK port (but not the PF itself).
1064          * Reject this match criterion as unsupported.
1065          */
1066         if (spec == NULL) {
1067                 return rte_flow_error_set(error, EINVAL,
1068                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1069                                 "Bad spec in the VF pattern item");
1070         }
1071
1072         rc = efx_mae_mport_by_pcie_function(encp->enc_pf, spec->id, &mport_v);
1073         if (rc != 0) {
1074                 return rte_flow_error_set(error, rc,
1075                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1076                                 "Failed to convert the PF + VF IDs");
1077         }
1078
1079         rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec, &mport_v, NULL);
1080         if (rc != 0) {
1081                 return rte_flow_error_set(error, rc,
1082                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1083                                 "Failed to set MPORT for the PF + VF");
1084         }
1085
1086         ctx_mae->match_mport_set = B_TRUE;
1087
1088         return 0;
1089 }
1090
1091 /*
1092  * Having this field ID in a field locator means that this
1093  * locator cannot be used to actually set the field at the
1094  * time when the corresponding item gets encountered. Such
1095  * fields get stashed in the parsing context instead. This
1096  * is required to resolve dependencies between the stashed
1097  * fields. See sfc_mae_rule_process_pattern_data().
1098  */
1099 #define SFC_MAE_FIELD_HANDLING_DEFERRED EFX_MAE_FIELD_NIDS
1100
1101 struct sfc_mae_field_locator {
1102         efx_mae_field_id_t              field_id;
1103         size_t                          size;
1104         /* Field offset in the corresponding rte_flow_item_ struct */
1105         size_t                          ofst;
1106 };
1107
1108 static void
1109 sfc_mae_item_build_supp_mask(const struct sfc_mae_field_locator *field_locators,
1110                              unsigned int nb_field_locators, void *mask_ptr,
1111                              size_t mask_size)
1112 {
1113         unsigned int i;
1114
1115         memset(mask_ptr, 0, mask_size);
1116
1117         for (i = 0; i < nb_field_locators; ++i) {
1118                 const struct sfc_mae_field_locator *fl = &field_locators[i];
1119
1120                 SFC_ASSERT(fl->ofst + fl->size <= mask_size);
1121                 memset(RTE_PTR_ADD(mask_ptr, fl->ofst), 0xff, fl->size);
1122         }
1123 }
1124
1125 static int
1126 sfc_mae_parse_item(const struct sfc_mae_field_locator *field_locators,
1127                    unsigned int nb_field_locators, const uint8_t *spec,
1128                    const uint8_t *mask, struct sfc_mae_parse_ctx *ctx,
1129                    struct rte_flow_error *error)
1130 {
1131         const efx_mae_field_id_t *fremap = ctx->field_ids_remap;
1132         unsigned int i;
1133         int rc = 0;
1134
1135         for (i = 0; i < nb_field_locators; ++i) {
1136                 const struct sfc_mae_field_locator *fl = &field_locators[i];
1137
1138                 if (fl->field_id == SFC_MAE_FIELD_HANDLING_DEFERRED)
1139                         continue;
1140
1141                 rc = efx_mae_match_spec_field_set(ctx->match_spec,
1142                                                   fremap[fl->field_id],
1143                                                   fl->size, spec + fl->ofst,
1144                                                   fl->size, mask + fl->ofst);
1145                 if (rc != 0)
1146                         break;
1147         }
1148
1149         if (rc != 0) {
1150                 rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM,
1151                                 NULL, "Failed to process item fields");
1152         }
1153
1154         return rc;
1155 }
1156
1157 static const struct sfc_mae_field_locator flocs_eth[] = {
1158         {
1159                 /*
1160                  * This locator is used only for building supported fields mask.
1161                  * The field is handled by sfc_mae_rule_process_pattern_data().
1162                  */
1163                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1164                 RTE_SIZEOF_FIELD(struct rte_flow_item_eth, type),
1165                 offsetof(struct rte_flow_item_eth, type),
1166         },
1167         {
1168                 EFX_MAE_FIELD_ETH_DADDR_BE,
1169                 RTE_SIZEOF_FIELD(struct rte_flow_item_eth, dst),
1170                 offsetof(struct rte_flow_item_eth, dst),
1171         },
1172         {
1173                 EFX_MAE_FIELD_ETH_SADDR_BE,
1174                 RTE_SIZEOF_FIELD(struct rte_flow_item_eth, src),
1175                 offsetof(struct rte_flow_item_eth, src),
1176         },
1177 };
1178
1179 static int
1180 sfc_mae_rule_parse_item_eth(const struct rte_flow_item *item,
1181                             struct sfc_flow_parse_ctx *ctx,
1182                             struct rte_flow_error *error)
1183 {
1184         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1185         struct rte_flow_item_eth supp_mask;
1186         const uint8_t *spec = NULL;
1187         const uint8_t *mask = NULL;
1188         int rc;
1189
1190         sfc_mae_item_build_supp_mask(flocs_eth, RTE_DIM(flocs_eth),
1191                                      &supp_mask, sizeof(supp_mask));
1192         supp_mask.has_vlan = 1;
1193
1194         rc = sfc_flow_parse_init(item,
1195                                  (const void **)&spec, (const void **)&mask,
1196                                  (const void *)&supp_mask,
1197                                  &rte_flow_item_eth_mask,
1198                                  sizeof(struct rte_flow_item_eth), error);
1199         if (rc != 0)
1200                 return rc;
1201
1202         if (spec != NULL) {
1203                 struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1204                 struct sfc_mae_ethertype *ethertypes = pdata->ethertypes;
1205                 const struct rte_flow_item_eth *item_spec;
1206                 const struct rte_flow_item_eth *item_mask;
1207
1208                 item_spec = (const struct rte_flow_item_eth *)spec;
1209                 item_mask = (const struct rte_flow_item_eth *)mask;
1210
1211                 /*
1212                  * Remember various match criteria in the parsing context.
1213                  * sfc_mae_rule_process_pattern_data() will consider them
1214                  * altogether when the rest of the items have been parsed.
1215                  */
1216                 ethertypes[0].value = item_spec->type;
1217                 ethertypes[0].mask = item_mask->type;
1218                 if (item_mask->has_vlan) {
1219                         pdata->has_ovlan_mask = B_TRUE;
1220                         if (item_spec->has_vlan)
1221                                 pdata->has_ovlan_value = B_TRUE;
1222                 }
1223         } else {
1224                 /*
1225                  * The specification is empty. The overall pattern
1226                  * validity will be enforced at the end of parsing.
1227                  * See sfc_mae_rule_process_pattern_data().
1228                  */
1229                 return 0;
1230         }
1231
1232         return sfc_mae_parse_item(flocs_eth, RTE_DIM(flocs_eth), spec, mask,
1233                                   ctx_mae, error);
1234 }
1235
1236 static const struct sfc_mae_field_locator flocs_vlan[] = {
1237         /* Outermost tag */
1238         {
1239                 EFX_MAE_FIELD_VLAN0_TCI_BE,
1240                 RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, tci),
1241                 offsetof(struct rte_flow_item_vlan, tci),
1242         },
1243         {
1244                 /*
1245                  * This locator is used only for building supported fields mask.
1246                  * The field is handled by sfc_mae_rule_process_pattern_data().
1247                  */
1248                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1249                 RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, inner_type),
1250                 offsetof(struct rte_flow_item_vlan, inner_type),
1251         },
1252
1253         /* Innermost tag */
1254         {
1255                 EFX_MAE_FIELD_VLAN1_TCI_BE,
1256                 RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, tci),
1257                 offsetof(struct rte_flow_item_vlan, tci),
1258         },
1259         {
1260                 /*
1261                  * This locator is used only for building supported fields mask.
1262                  * The field is handled by sfc_mae_rule_process_pattern_data().
1263                  */
1264                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1265                 RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, inner_type),
1266                 offsetof(struct rte_flow_item_vlan, inner_type),
1267         },
1268 };
1269
1270 static int
1271 sfc_mae_rule_parse_item_vlan(const struct rte_flow_item *item,
1272                              struct sfc_flow_parse_ctx *ctx,
1273                              struct rte_flow_error *error)
1274 {
1275         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1276         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1277         boolean_t *has_vlan_mp_by_nb_tags[SFC_MAE_MATCH_VLAN_MAX_NTAGS] = {
1278                 &pdata->has_ovlan_mask,
1279                 &pdata->has_ivlan_mask,
1280         };
1281         boolean_t *has_vlan_vp_by_nb_tags[SFC_MAE_MATCH_VLAN_MAX_NTAGS] = {
1282                 &pdata->has_ovlan_value,
1283                 &pdata->has_ivlan_value,
1284         };
1285         boolean_t *cur_tag_presence_bit_mp;
1286         boolean_t *cur_tag_presence_bit_vp;
1287         const struct sfc_mae_field_locator *flocs;
1288         struct rte_flow_item_vlan supp_mask;
1289         const uint8_t *spec = NULL;
1290         const uint8_t *mask = NULL;
1291         unsigned int nb_flocs;
1292         int rc;
1293
1294         RTE_BUILD_BUG_ON(SFC_MAE_MATCH_VLAN_MAX_NTAGS != 2);
1295
1296         if (pdata->nb_vlan_tags == SFC_MAE_MATCH_VLAN_MAX_NTAGS) {
1297                 return rte_flow_error_set(error, ENOTSUP,
1298                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1299                                 "Can't match that many VLAN tags");
1300         }
1301
1302         cur_tag_presence_bit_mp = has_vlan_mp_by_nb_tags[pdata->nb_vlan_tags];
1303         cur_tag_presence_bit_vp = has_vlan_vp_by_nb_tags[pdata->nb_vlan_tags];
1304
1305         if (*cur_tag_presence_bit_mp == B_TRUE &&
1306             *cur_tag_presence_bit_vp == B_FALSE) {
1307                 return rte_flow_error_set(error, EINVAL,
1308                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1309                                 "The previous item enforces no (more) VLAN, "
1310                                 "so the current item (VLAN) must not exist");
1311         }
1312
1313         nb_flocs = RTE_DIM(flocs_vlan) / SFC_MAE_MATCH_VLAN_MAX_NTAGS;
1314         flocs = flocs_vlan + pdata->nb_vlan_tags * nb_flocs;
1315
1316         sfc_mae_item_build_supp_mask(flocs, nb_flocs,
1317                                      &supp_mask, sizeof(supp_mask));
1318         /*
1319          * This only means that the field is supported by the driver and libefx.
1320          * Support on NIC level will be checked when all items have been parsed.
1321          */
1322         supp_mask.has_more_vlan = 1;
1323
1324         rc = sfc_flow_parse_init(item,
1325                                  (const void **)&spec, (const void **)&mask,
1326                                  (const void *)&supp_mask,
1327                                  &rte_flow_item_vlan_mask,
1328                                  sizeof(struct rte_flow_item_vlan), error);
1329         if (rc != 0)
1330                 return rc;
1331
1332         if (spec != NULL) {
1333                 struct sfc_mae_ethertype *et = pdata->ethertypes;
1334                 const struct rte_flow_item_vlan *item_spec;
1335                 const struct rte_flow_item_vlan *item_mask;
1336
1337                 item_spec = (const struct rte_flow_item_vlan *)spec;
1338                 item_mask = (const struct rte_flow_item_vlan *)mask;
1339
1340                 /*
1341                  * Remember various match criteria in the parsing context.
1342                  * sfc_mae_rule_process_pattern_data() will consider them
1343                  * altogether when the rest of the items have been parsed.
1344                  */
1345                 et[pdata->nb_vlan_tags + 1].value = item_spec->inner_type;
1346                 et[pdata->nb_vlan_tags + 1].mask = item_mask->inner_type;
1347                 pdata->tci_masks[pdata->nb_vlan_tags] = item_mask->tci;
1348                 if (item_mask->has_more_vlan) {
1349                         if (pdata->nb_vlan_tags ==
1350                             SFC_MAE_MATCH_VLAN_MAX_NTAGS) {
1351                                 return rte_flow_error_set(error, ENOTSUP,
1352                                         RTE_FLOW_ERROR_TYPE_ITEM, item,
1353                                         "Can't use 'has_more_vlan' in "
1354                                         "the second item VLAN");
1355                         }
1356                         pdata->has_ivlan_mask = B_TRUE;
1357                         if (item_spec->has_more_vlan)
1358                                 pdata->has_ivlan_value = B_TRUE;
1359                 }
1360
1361                 /* Convert TCI to MAE representation right now. */
1362                 rc = sfc_mae_parse_item(flocs, nb_flocs, spec, mask,
1363                                         ctx_mae, error);
1364                 if (rc != 0)
1365                         return rc;
1366         }
1367
1368         ++(pdata->nb_vlan_tags);
1369
1370         return 0;
1371 }
1372
1373 static const struct sfc_mae_field_locator flocs_ipv4[] = {
1374         {
1375                 EFX_MAE_FIELD_SRC_IP4_BE,
1376                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.src_addr),
1377                 offsetof(struct rte_flow_item_ipv4, hdr.src_addr),
1378         },
1379         {
1380                 EFX_MAE_FIELD_DST_IP4_BE,
1381                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.dst_addr),
1382                 offsetof(struct rte_flow_item_ipv4, hdr.dst_addr),
1383         },
1384         {
1385                 /*
1386                  * This locator is used only for building supported fields mask.
1387                  * The field is handled by sfc_mae_rule_process_pattern_data().
1388                  */
1389                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1390                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.next_proto_id),
1391                 offsetof(struct rte_flow_item_ipv4, hdr.next_proto_id),
1392         },
1393         {
1394                 EFX_MAE_FIELD_IP_TOS,
1395                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4,
1396                                  hdr.type_of_service),
1397                 offsetof(struct rte_flow_item_ipv4, hdr.type_of_service),
1398         },
1399         {
1400                 EFX_MAE_FIELD_IP_TTL,
1401                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.time_to_live),
1402                 offsetof(struct rte_flow_item_ipv4, hdr.time_to_live),
1403         },
1404 };
1405
1406 static int
1407 sfc_mae_rule_parse_item_ipv4(const struct rte_flow_item *item,
1408                              struct sfc_flow_parse_ctx *ctx,
1409                              struct rte_flow_error *error)
1410 {
1411         rte_be16_t ethertype_ipv4_be = RTE_BE16(RTE_ETHER_TYPE_IPV4);
1412         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1413         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1414         struct rte_flow_item_ipv4 supp_mask;
1415         const uint8_t *spec = NULL;
1416         const uint8_t *mask = NULL;
1417         int rc;
1418
1419         sfc_mae_item_build_supp_mask(flocs_ipv4, RTE_DIM(flocs_ipv4),
1420                                      &supp_mask, sizeof(supp_mask));
1421
1422         rc = sfc_flow_parse_init(item,
1423                                  (const void **)&spec, (const void **)&mask,
1424                                  (const void *)&supp_mask,
1425                                  &rte_flow_item_ipv4_mask,
1426                                  sizeof(struct rte_flow_item_ipv4), error);
1427         if (rc != 0)
1428                 return rc;
1429
1430         pdata->innermost_ethertype_restriction.value = ethertype_ipv4_be;
1431         pdata->innermost_ethertype_restriction.mask = RTE_BE16(0xffff);
1432
1433         if (spec != NULL) {
1434                 const struct rte_flow_item_ipv4 *item_spec;
1435                 const struct rte_flow_item_ipv4 *item_mask;
1436
1437                 item_spec = (const struct rte_flow_item_ipv4 *)spec;
1438                 item_mask = (const struct rte_flow_item_ipv4 *)mask;
1439
1440                 pdata->l3_next_proto_value = item_spec->hdr.next_proto_id;
1441                 pdata->l3_next_proto_mask = item_mask->hdr.next_proto_id;
1442         } else {
1443                 return 0;
1444         }
1445
1446         return sfc_mae_parse_item(flocs_ipv4, RTE_DIM(flocs_ipv4), spec, mask,
1447                                   ctx_mae, error);
1448 }
1449
1450 static const struct sfc_mae_field_locator flocs_ipv6[] = {
1451         {
1452                 EFX_MAE_FIELD_SRC_IP6_BE,
1453                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.src_addr),
1454                 offsetof(struct rte_flow_item_ipv6, hdr.src_addr),
1455         },
1456         {
1457                 EFX_MAE_FIELD_DST_IP6_BE,
1458                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.dst_addr),
1459                 offsetof(struct rte_flow_item_ipv6, hdr.dst_addr),
1460         },
1461         {
1462                 /*
1463                  * This locator is used only for building supported fields mask.
1464                  * The field is handled by sfc_mae_rule_process_pattern_data().
1465                  */
1466                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1467                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.proto),
1468                 offsetof(struct rte_flow_item_ipv6, hdr.proto),
1469         },
1470         {
1471                 EFX_MAE_FIELD_IP_TTL,
1472                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.hop_limits),
1473                 offsetof(struct rte_flow_item_ipv6, hdr.hop_limits),
1474         },
1475 };
1476
1477 static int
1478 sfc_mae_rule_parse_item_ipv6(const struct rte_flow_item *item,
1479                              struct sfc_flow_parse_ctx *ctx,
1480                              struct rte_flow_error *error)
1481 {
1482         rte_be16_t ethertype_ipv6_be = RTE_BE16(RTE_ETHER_TYPE_IPV6);
1483         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1484         const efx_mae_field_id_t *fremap = ctx_mae->field_ids_remap;
1485         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1486         struct rte_flow_item_ipv6 supp_mask;
1487         const uint8_t *spec = NULL;
1488         const uint8_t *mask = NULL;
1489         rte_be32_t vtc_flow_be;
1490         uint32_t vtc_flow;
1491         uint8_t tc_value;
1492         uint8_t tc_mask;
1493         int rc;
1494
1495         sfc_mae_item_build_supp_mask(flocs_ipv6, RTE_DIM(flocs_ipv6),
1496                                      &supp_mask, sizeof(supp_mask));
1497
1498         vtc_flow_be = RTE_BE32(RTE_IPV6_HDR_TC_MASK);
1499         memcpy(&supp_mask, &vtc_flow_be, sizeof(vtc_flow_be));
1500
1501         rc = sfc_flow_parse_init(item,
1502                                  (const void **)&spec, (const void **)&mask,
1503                                  (const void *)&supp_mask,
1504                                  &rte_flow_item_ipv6_mask,
1505                                  sizeof(struct rte_flow_item_ipv6), error);
1506         if (rc != 0)
1507                 return rc;
1508
1509         pdata->innermost_ethertype_restriction.value = ethertype_ipv6_be;
1510         pdata->innermost_ethertype_restriction.mask = RTE_BE16(0xffff);
1511
1512         if (spec != NULL) {
1513                 const struct rte_flow_item_ipv6 *item_spec;
1514                 const struct rte_flow_item_ipv6 *item_mask;
1515
1516                 item_spec = (const struct rte_flow_item_ipv6 *)spec;
1517                 item_mask = (const struct rte_flow_item_ipv6 *)mask;
1518
1519                 pdata->l3_next_proto_value = item_spec->hdr.proto;
1520                 pdata->l3_next_proto_mask = item_mask->hdr.proto;
1521         } else {
1522                 return 0;
1523         }
1524
1525         rc = sfc_mae_parse_item(flocs_ipv6, RTE_DIM(flocs_ipv6), spec, mask,
1526                                 ctx_mae, error);
1527         if (rc != 0)
1528                 return rc;
1529
1530         memcpy(&vtc_flow_be, spec, sizeof(vtc_flow_be));
1531         vtc_flow = rte_be_to_cpu_32(vtc_flow_be);
1532         tc_value = (vtc_flow & RTE_IPV6_HDR_TC_MASK) >> RTE_IPV6_HDR_TC_SHIFT;
1533
1534         memcpy(&vtc_flow_be, mask, sizeof(vtc_flow_be));
1535         vtc_flow = rte_be_to_cpu_32(vtc_flow_be);
1536         tc_mask = (vtc_flow & RTE_IPV6_HDR_TC_MASK) >> RTE_IPV6_HDR_TC_SHIFT;
1537
1538         rc = efx_mae_match_spec_field_set(ctx_mae->match_spec,
1539                                           fremap[EFX_MAE_FIELD_IP_TOS],
1540                                           sizeof(tc_value), &tc_value,
1541                                           sizeof(tc_mask), &tc_mask);
1542         if (rc != 0) {
1543                 return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM,
1544                                 NULL, "Failed to process item fields");
1545         }
1546
1547         return 0;
1548 }
1549
1550 static const struct sfc_mae_field_locator flocs_tcp[] = {
1551         {
1552                 EFX_MAE_FIELD_L4_SPORT_BE,
1553                 RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.src_port),
1554                 offsetof(struct rte_flow_item_tcp, hdr.src_port),
1555         },
1556         {
1557                 EFX_MAE_FIELD_L4_DPORT_BE,
1558                 RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.dst_port),
1559                 offsetof(struct rte_flow_item_tcp, hdr.dst_port),
1560         },
1561         {
1562                 EFX_MAE_FIELD_TCP_FLAGS_BE,
1563                 /*
1564                  * The values have been picked intentionally since the
1565                  * target MAE field is oversize (16 bit). This mapping
1566                  * relies on the fact that the MAE field is big-endian.
1567                  */
1568                 RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.data_off) +
1569                 RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.tcp_flags),
1570                 offsetof(struct rte_flow_item_tcp, hdr.data_off),
1571         },
1572 };
1573
1574 static int
1575 sfc_mae_rule_parse_item_tcp(const struct rte_flow_item *item,
1576                             struct sfc_flow_parse_ctx *ctx,
1577                             struct rte_flow_error *error)
1578 {
1579         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1580         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1581         struct rte_flow_item_tcp supp_mask;
1582         const uint8_t *spec = NULL;
1583         const uint8_t *mask = NULL;
1584         int rc;
1585
1586         /*
1587          * When encountered among outermost items, item TCP is invalid.
1588          * Check which match specification is being constructed now.
1589          */
1590         if (ctx_mae->match_spec != ctx_mae->match_spec_action) {
1591                 return rte_flow_error_set(error, EINVAL,
1592                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1593                                           "TCP in outer frame is invalid");
1594         }
1595
1596         sfc_mae_item_build_supp_mask(flocs_tcp, RTE_DIM(flocs_tcp),
1597                                      &supp_mask, sizeof(supp_mask));
1598
1599         rc = sfc_flow_parse_init(item,
1600                                  (const void **)&spec, (const void **)&mask,
1601                                  (const void *)&supp_mask,
1602                                  &rte_flow_item_tcp_mask,
1603                                  sizeof(struct rte_flow_item_tcp), error);
1604         if (rc != 0)
1605                 return rc;
1606
1607         pdata->l3_next_proto_restriction_value = IPPROTO_TCP;
1608         pdata->l3_next_proto_restriction_mask = 0xff;
1609
1610         if (spec == NULL)
1611                 return 0;
1612
1613         return sfc_mae_parse_item(flocs_tcp, RTE_DIM(flocs_tcp), spec, mask,
1614                                   ctx_mae, error);
1615 }
1616
1617 static const struct sfc_mae_field_locator flocs_udp[] = {
1618         {
1619                 EFX_MAE_FIELD_L4_SPORT_BE,
1620                 RTE_SIZEOF_FIELD(struct rte_flow_item_udp, hdr.src_port),
1621                 offsetof(struct rte_flow_item_udp, hdr.src_port),
1622         },
1623         {
1624                 EFX_MAE_FIELD_L4_DPORT_BE,
1625                 RTE_SIZEOF_FIELD(struct rte_flow_item_udp, hdr.dst_port),
1626                 offsetof(struct rte_flow_item_udp, hdr.dst_port),
1627         },
1628 };
1629
1630 static int
1631 sfc_mae_rule_parse_item_udp(const struct rte_flow_item *item,
1632                             struct sfc_flow_parse_ctx *ctx,
1633                             struct rte_flow_error *error)
1634 {
1635         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1636         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1637         struct rte_flow_item_udp supp_mask;
1638         const uint8_t *spec = NULL;
1639         const uint8_t *mask = NULL;
1640         int rc;
1641
1642         sfc_mae_item_build_supp_mask(flocs_udp, RTE_DIM(flocs_udp),
1643                                      &supp_mask, sizeof(supp_mask));
1644
1645         rc = sfc_flow_parse_init(item,
1646                                  (const void **)&spec, (const void **)&mask,
1647                                  (const void *)&supp_mask,
1648                                  &rte_flow_item_udp_mask,
1649                                  sizeof(struct rte_flow_item_udp), error);
1650         if (rc != 0)
1651                 return rc;
1652
1653         pdata->l3_next_proto_restriction_value = IPPROTO_UDP;
1654         pdata->l3_next_proto_restriction_mask = 0xff;
1655
1656         if (spec == NULL)
1657                 return 0;
1658
1659         return sfc_mae_parse_item(flocs_udp, RTE_DIM(flocs_udp), spec, mask,
1660                                   ctx_mae, error);
1661 }
1662
1663 static const struct sfc_mae_field_locator flocs_tunnel[] = {
1664         {
1665                 /*
1666                  * The size and offset values are relevant
1667                  * for Geneve and NVGRE, too.
1668                  */
1669                 .size = RTE_SIZEOF_FIELD(struct rte_flow_item_vxlan, vni),
1670                 .ofst = offsetof(struct rte_flow_item_vxlan, vni),
1671         },
1672 };
1673
1674 /*
1675  * An auxiliary registry which allows using non-encap. field IDs
1676  * directly when building a match specification of type ACTION.
1677  *
1678  * See sfc_mae_rule_parse_pattern() and sfc_mae_rule_parse_item_tunnel().
1679  */
1680 static const efx_mae_field_id_t field_ids_no_remap[] = {
1681 #define FIELD_ID_NO_REMAP(_field) \
1682         [EFX_MAE_FIELD_##_field] = EFX_MAE_FIELD_##_field
1683
1684         FIELD_ID_NO_REMAP(ETHER_TYPE_BE),
1685         FIELD_ID_NO_REMAP(ETH_SADDR_BE),
1686         FIELD_ID_NO_REMAP(ETH_DADDR_BE),
1687         FIELD_ID_NO_REMAP(VLAN0_TCI_BE),
1688         FIELD_ID_NO_REMAP(VLAN0_PROTO_BE),
1689         FIELD_ID_NO_REMAP(VLAN1_TCI_BE),
1690         FIELD_ID_NO_REMAP(VLAN1_PROTO_BE),
1691         FIELD_ID_NO_REMAP(SRC_IP4_BE),
1692         FIELD_ID_NO_REMAP(DST_IP4_BE),
1693         FIELD_ID_NO_REMAP(IP_PROTO),
1694         FIELD_ID_NO_REMAP(IP_TOS),
1695         FIELD_ID_NO_REMAP(IP_TTL),
1696         FIELD_ID_NO_REMAP(SRC_IP6_BE),
1697         FIELD_ID_NO_REMAP(DST_IP6_BE),
1698         FIELD_ID_NO_REMAP(L4_SPORT_BE),
1699         FIELD_ID_NO_REMAP(L4_DPORT_BE),
1700         FIELD_ID_NO_REMAP(TCP_FLAGS_BE),
1701         FIELD_ID_NO_REMAP(HAS_OVLAN),
1702         FIELD_ID_NO_REMAP(HAS_IVLAN),
1703
1704 #undef FIELD_ID_NO_REMAP
1705 };
1706
1707 /*
1708  * An auxiliary registry which allows using "ENC" field IDs
1709  * when building a match specification of type OUTER.
1710  *
1711  * See sfc_mae_rule_encap_parse_init().
1712  */
1713 static const efx_mae_field_id_t field_ids_remap_to_encap[] = {
1714 #define FIELD_ID_REMAP_TO_ENCAP(_field) \
1715         [EFX_MAE_FIELD_##_field] = EFX_MAE_FIELD_ENC_##_field
1716
1717         FIELD_ID_REMAP_TO_ENCAP(ETHER_TYPE_BE),
1718         FIELD_ID_REMAP_TO_ENCAP(ETH_SADDR_BE),
1719         FIELD_ID_REMAP_TO_ENCAP(ETH_DADDR_BE),
1720         FIELD_ID_REMAP_TO_ENCAP(VLAN0_TCI_BE),
1721         FIELD_ID_REMAP_TO_ENCAP(VLAN0_PROTO_BE),
1722         FIELD_ID_REMAP_TO_ENCAP(VLAN1_TCI_BE),
1723         FIELD_ID_REMAP_TO_ENCAP(VLAN1_PROTO_BE),
1724         FIELD_ID_REMAP_TO_ENCAP(SRC_IP4_BE),
1725         FIELD_ID_REMAP_TO_ENCAP(DST_IP4_BE),
1726         FIELD_ID_REMAP_TO_ENCAP(IP_PROTO),
1727         FIELD_ID_REMAP_TO_ENCAP(IP_TOS),
1728         FIELD_ID_REMAP_TO_ENCAP(IP_TTL),
1729         FIELD_ID_REMAP_TO_ENCAP(SRC_IP6_BE),
1730         FIELD_ID_REMAP_TO_ENCAP(DST_IP6_BE),
1731         FIELD_ID_REMAP_TO_ENCAP(L4_SPORT_BE),
1732         FIELD_ID_REMAP_TO_ENCAP(L4_DPORT_BE),
1733         FIELD_ID_REMAP_TO_ENCAP(HAS_OVLAN),
1734         FIELD_ID_REMAP_TO_ENCAP(HAS_IVLAN),
1735
1736 #undef FIELD_ID_REMAP_TO_ENCAP
1737 };
1738
1739 static int
1740 sfc_mae_rule_parse_item_tunnel(const struct rte_flow_item *item,
1741                                struct sfc_flow_parse_ctx *ctx,
1742                                struct rte_flow_error *error)
1743 {
1744         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1745         uint8_t vnet_id_v[sizeof(uint32_t)] = {0};
1746         uint8_t vnet_id_m[sizeof(uint32_t)] = {0};
1747         const struct rte_flow_item_vxlan *vxp;
1748         uint8_t supp_mask[sizeof(uint64_t)];
1749         const uint8_t *spec = NULL;
1750         const uint8_t *mask = NULL;
1751         int rc;
1752
1753         /*
1754          * We're about to start processing inner frame items.
1755          * Process pattern data that has been deferred so far
1756          * and reset pattern data storage.
1757          */
1758         rc = sfc_mae_rule_process_pattern_data(ctx_mae, error);
1759         if (rc != 0)
1760                 return rc;
1761
1762         memset(&ctx_mae->pattern_data, 0, sizeof(ctx_mae->pattern_data));
1763
1764         sfc_mae_item_build_supp_mask(flocs_tunnel, RTE_DIM(flocs_tunnel),
1765                                      &supp_mask, sizeof(supp_mask));
1766
1767         /*
1768          * This tunnel item was preliminarily detected by
1769          * sfc_mae_rule_encap_parse_init(). Default mask
1770          * was also picked by that helper. Use it here.
1771          */
1772         rc = sfc_flow_parse_init(item,
1773                                  (const void **)&spec, (const void **)&mask,
1774                                  (const void *)&supp_mask,
1775                                  ctx_mae->tunnel_def_mask,
1776                                  ctx_mae->tunnel_def_mask_size,  error);
1777         if (rc != 0)
1778                 return rc;
1779
1780         /*
1781          * This item and later ones comprise a
1782          * match specification of type ACTION.
1783          */
1784         ctx_mae->match_spec = ctx_mae->match_spec_action;
1785
1786         /* This item and later ones use non-encap. EFX MAE field IDs. */
1787         ctx_mae->field_ids_remap = field_ids_no_remap;
1788
1789         if (spec == NULL)
1790                 return 0;
1791
1792         /*
1793          * Field EFX_MAE_FIELD_ENC_VNET_ID_BE is a 32-bit one.
1794          * Copy 24-bit VNI, which is BE, at offset 1 in it.
1795          * The extra byte is 0 both in the mask and in the value.
1796          */
1797         vxp = (const struct rte_flow_item_vxlan *)spec;
1798         memcpy(vnet_id_v + 1, &vxp->vni, sizeof(vxp->vni));
1799
1800         vxp = (const struct rte_flow_item_vxlan *)mask;
1801         memcpy(vnet_id_m + 1, &vxp->vni, sizeof(vxp->vni));
1802
1803         rc = efx_mae_match_spec_field_set(ctx_mae->match_spec,
1804                                           EFX_MAE_FIELD_ENC_VNET_ID_BE,
1805                                           sizeof(vnet_id_v), vnet_id_v,
1806                                           sizeof(vnet_id_m), vnet_id_m);
1807         if (rc != 0) {
1808                 rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM,
1809                                         item, "Failed to set VXLAN VNI");
1810         }
1811
1812         return rc;
1813 }
1814
1815 static const struct sfc_flow_item sfc_flow_items[] = {
1816         {
1817                 .type = RTE_FLOW_ITEM_TYPE_PORT_ID,
1818                 /*
1819                  * In terms of RTE flow, this item is a META one,
1820                  * and its position in the pattern is don't care.
1821                  */
1822                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
1823                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
1824                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
1825                 .parse = sfc_mae_rule_parse_item_port_id,
1826         },
1827         {
1828                 .type = RTE_FLOW_ITEM_TYPE_PHY_PORT,
1829                 /*
1830                  * In terms of RTE flow, this item is a META one,
1831                  * and its position in the pattern is don't care.
1832                  */
1833                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
1834                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
1835                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
1836                 .parse = sfc_mae_rule_parse_item_phy_port,
1837         },
1838         {
1839                 .type = RTE_FLOW_ITEM_TYPE_PF,
1840                 /*
1841                  * In terms of RTE flow, this item is a META one,
1842                  * and its position in the pattern is don't care.
1843                  */
1844                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
1845                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
1846                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
1847                 .parse = sfc_mae_rule_parse_item_pf,
1848         },
1849         {
1850                 .type = RTE_FLOW_ITEM_TYPE_VF,
1851                 /*
1852                  * In terms of RTE flow, this item is a META one,
1853                  * and its position in the pattern is don't care.
1854                  */
1855                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
1856                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
1857                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
1858                 .parse = sfc_mae_rule_parse_item_vf,
1859         },
1860         {
1861                 .type = RTE_FLOW_ITEM_TYPE_ETH,
1862                 .prev_layer = SFC_FLOW_ITEM_START_LAYER,
1863                 .layer = SFC_FLOW_ITEM_L2,
1864                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
1865                 .parse = sfc_mae_rule_parse_item_eth,
1866         },
1867         {
1868                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
1869                 .prev_layer = SFC_FLOW_ITEM_L2,
1870                 .layer = SFC_FLOW_ITEM_L2,
1871                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
1872                 .parse = sfc_mae_rule_parse_item_vlan,
1873         },
1874         {
1875                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
1876                 .prev_layer = SFC_FLOW_ITEM_L2,
1877                 .layer = SFC_FLOW_ITEM_L3,
1878                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
1879                 .parse = sfc_mae_rule_parse_item_ipv4,
1880         },
1881         {
1882                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
1883                 .prev_layer = SFC_FLOW_ITEM_L2,
1884                 .layer = SFC_FLOW_ITEM_L3,
1885                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
1886                 .parse = sfc_mae_rule_parse_item_ipv6,
1887         },
1888         {
1889                 .type = RTE_FLOW_ITEM_TYPE_TCP,
1890                 .prev_layer = SFC_FLOW_ITEM_L3,
1891                 .layer = SFC_FLOW_ITEM_L4,
1892                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
1893                 .parse = sfc_mae_rule_parse_item_tcp,
1894         },
1895         {
1896                 .type = RTE_FLOW_ITEM_TYPE_UDP,
1897                 .prev_layer = SFC_FLOW_ITEM_L3,
1898                 .layer = SFC_FLOW_ITEM_L4,
1899                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
1900                 .parse = sfc_mae_rule_parse_item_udp,
1901         },
1902         {
1903                 .type = RTE_FLOW_ITEM_TYPE_VXLAN,
1904                 .prev_layer = SFC_FLOW_ITEM_L4,
1905                 .layer = SFC_FLOW_ITEM_START_LAYER,
1906                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
1907                 .parse = sfc_mae_rule_parse_item_tunnel,
1908         },
1909         {
1910                 .type = RTE_FLOW_ITEM_TYPE_GENEVE,
1911                 .prev_layer = SFC_FLOW_ITEM_L4,
1912                 .layer = SFC_FLOW_ITEM_START_LAYER,
1913                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
1914                 .parse = sfc_mae_rule_parse_item_tunnel,
1915         },
1916         {
1917                 .type = RTE_FLOW_ITEM_TYPE_NVGRE,
1918                 .prev_layer = SFC_FLOW_ITEM_L3,
1919                 .layer = SFC_FLOW_ITEM_START_LAYER,
1920                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
1921                 .parse = sfc_mae_rule_parse_item_tunnel,
1922         },
1923 };
1924
1925 static int
1926 sfc_mae_rule_process_outer(struct sfc_adapter *sa,
1927                            struct sfc_mae_parse_ctx *ctx,
1928                            struct sfc_mae_outer_rule **rulep,
1929                            struct rte_flow_error *error)
1930 {
1931         efx_mae_rule_id_t invalid_rule_id = { .id = EFX_MAE_RSRC_ID_INVALID };
1932         int rc;
1933
1934         if (ctx->encap_type == EFX_TUNNEL_PROTOCOL_NONE) {
1935                 *rulep = NULL;
1936                 goto no_or_id;
1937         }
1938
1939         SFC_ASSERT(ctx->match_spec_outer != NULL);
1940
1941         if (!efx_mae_match_spec_is_valid(sa->nic, ctx->match_spec_outer)) {
1942                 return rte_flow_error_set(error, ENOTSUP,
1943                                           RTE_FLOW_ERROR_TYPE_ITEM, NULL,
1944                                           "Inconsistent pattern (outer)");
1945         }
1946
1947         *rulep = sfc_mae_outer_rule_attach(sa, ctx->match_spec_outer,
1948                                            ctx->encap_type);
1949         if (*rulep != NULL) {
1950                 efx_mae_match_spec_fini(sa->nic, ctx->match_spec_outer);
1951         } else {
1952                 rc = sfc_mae_outer_rule_add(sa, ctx->match_spec_outer,
1953                                             ctx->encap_type, rulep);
1954                 if (rc != 0) {
1955                         return rte_flow_error_set(error, rc,
1956                                         RTE_FLOW_ERROR_TYPE_ITEM, NULL,
1957                                         "Failed to process the pattern");
1958                 }
1959         }
1960
1961         /* The spec has now been tracked by the outer rule entry. */
1962         ctx->match_spec_outer = NULL;
1963
1964 no_or_id:
1965         /*
1966          * In MAE, lookup sequence comprises outer parse, outer rule lookup,
1967          * inner parse (when some outer rule is hit) and action rule lookup.
1968          * If the currently processed flow does not come with an outer rule,
1969          * its action rule must be available only for packets which miss in
1970          * outer rule table. Set OR_ID match field to 0xffffffff/0xffffffff
1971          * in the action rule specification; this ensures correct behaviour.
1972          *
1973          * If, on the other hand, this flow does have an outer rule, its ID
1974          * may be unknown at the moment (not yet allocated), but OR_ID mask
1975          * has to be set to 0xffffffff anyway for correct class comparisons.
1976          * When the outer rule has been allocated, this match field will be
1977          * overridden by sfc_mae_outer_rule_enable() to use the right value.
1978          */
1979         rc = efx_mae_match_spec_outer_rule_id_set(ctx->match_spec_action,
1980                                                   &invalid_rule_id);
1981         if (rc != 0) {
1982                 if (*rulep != NULL)
1983                         sfc_mae_outer_rule_del(sa, *rulep);
1984
1985                 *rulep = NULL;
1986
1987                 return rte_flow_error_set(error, rc,
1988                                           RTE_FLOW_ERROR_TYPE_ITEM, NULL,
1989                                           "Failed to process the pattern");
1990         }
1991
1992         return 0;
1993 }
1994
1995 static int
1996 sfc_mae_rule_encap_parse_init(struct sfc_adapter *sa,
1997                               const struct rte_flow_item pattern[],
1998                               struct sfc_mae_parse_ctx *ctx,
1999                               struct rte_flow_error *error)
2000 {
2001         struct sfc_mae *mae = &sa->mae;
2002         int rc;
2003
2004         if (pattern == NULL) {
2005                 rte_flow_error_set(error, EINVAL,
2006                                    RTE_FLOW_ERROR_TYPE_ITEM_NUM, NULL,
2007                                    "NULL pattern");
2008                 return -rte_errno;
2009         }
2010
2011         for (;;) {
2012                 switch (pattern->type) {
2013                 case RTE_FLOW_ITEM_TYPE_VXLAN:
2014                         ctx->encap_type = EFX_TUNNEL_PROTOCOL_VXLAN;
2015                         ctx->tunnel_def_mask = &rte_flow_item_vxlan_mask;
2016                         ctx->tunnel_def_mask_size =
2017                                 sizeof(rte_flow_item_vxlan_mask);
2018                         break;
2019                 case RTE_FLOW_ITEM_TYPE_GENEVE:
2020                         ctx->encap_type = EFX_TUNNEL_PROTOCOL_GENEVE;
2021                         ctx->tunnel_def_mask = &rte_flow_item_geneve_mask;
2022                         ctx->tunnel_def_mask_size =
2023                                 sizeof(rte_flow_item_geneve_mask);
2024                         break;
2025                 case RTE_FLOW_ITEM_TYPE_NVGRE:
2026                         ctx->encap_type = EFX_TUNNEL_PROTOCOL_NVGRE;
2027                         ctx->tunnel_def_mask = &rte_flow_item_nvgre_mask;
2028                         ctx->tunnel_def_mask_size =
2029                                 sizeof(rte_flow_item_nvgre_mask);
2030                         break;
2031                 case RTE_FLOW_ITEM_TYPE_END:
2032                         break;
2033                 default:
2034                         ++pattern;
2035                         continue;
2036                 };
2037
2038                 break;
2039         }
2040
2041         if (pattern->type == RTE_FLOW_ITEM_TYPE_END)
2042                 return 0;
2043
2044         if ((mae->encap_types_supported & (1U << ctx->encap_type)) == 0) {
2045                 return rte_flow_error_set(error, ENOTSUP,
2046                                           RTE_FLOW_ERROR_TYPE_ITEM,
2047                                           pattern, "Unsupported tunnel item");
2048         }
2049
2050         if (ctx->priority >= mae->nb_outer_rule_prios_max) {
2051                 return rte_flow_error_set(error, ENOTSUP,
2052                                           RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
2053                                           NULL, "Unsupported priority level");
2054         }
2055
2056         rc = efx_mae_match_spec_init(sa->nic, EFX_MAE_RULE_OUTER, ctx->priority,
2057                                      &ctx->match_spec_outer);
2058         if (rc != 0) {
2059                 return rte_flow_error_set(error, rc,
2060                         RTE_FLOW_ERROR_TYPE_ITEM, pattern,
2061                         "Failed to initialise outer rule match specification");
2062         }
2063
2064         /* Outermost items comprise a match specification of type OUTER. */
2065         ctx->match_spec = ctx->match_spec_outer;
2066
2067         /* Outermost items use "ENC" EFX MAE field IDs. */
2068         ctx->field_ids_remap = field_ids_remap_to_encap;
2069
2070         return 0;
2071 }
2072
2073 static void
2074 sfc_mae_rule_encap_parse_fini(struct sfc_adapter *sa,
2075                               struct sfc_mae_parse_ctx *ctx)
2076 {
2077         if (ctx->encap_type == EFX_TUNNEL_PROTOCOL_NONE)
2078                 return;
2079
2080         if (ctx->match_spec_outer != NULL)
2081                 efx_mae_match_spec_fini(sa->nic, ctx->match_spec_outer);
2082 }
2083
2084 int
2085 sfc_mae_rule_parse_pattern(struct sfc_adapter *sa,
2086                            const struct rte_flow_item pattern[],
2087                            struct sfc_flow_spec_mae *spec,
2088                            struct rte_flow_error *error)
2089 {
2090         struct sfc_mae_parse_ctx ctx_mae;
2091         struct sfc_flow_parse_ctx ctx;
2092         int rc;
2093
2094         memset(&ctx_mae, 0, sizeof(ctx_mae));
2095         ctx_mae.priority = spec->priority;
2096         ctx_mae.sa = sa;
2097
2098         rc = efx_mae_match_spec_init(sa->nic, EFX_MAE_RULE_ACTION,
2099                                      spec->priority,
2100                                      &ctx_mae.match_spec_action);
2101         if (rc != 0) {
2102                 rc = rte_flow_error_set(error, rc,
2103                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2104                         "Failed to initialise action rule match specification");
2105                 goto fail_init_match_spec_action;
2106         }
2107
2108         /*
2109          * As a preliminary setting, assume that there is no encapsulation
2110          * in the pattern. That is, pattern items are about to comprise a
2111          * match specification of type ACTION and use non-encap. field IDs.
2112          *
2113          * sfc_mae_rule_encap_parse_init() below may override this.
2114          */
2115         ctx_mae.encap_type = EFX_TUNNEL_PROTOCOL_NONE;
2116         ctx_mae.match_spec = ctx_mae.match_spec_action;
2117         ctx_mae.field_ids_remap = field_ids_no_remap;
2118
2119         ctx.type = SFC_FLOW_PARSE_CTX_MAE;
2120         ctx.mae = &ctx_mae;
2121
2122         rc = sfc_mae_rule_encap_parse_init(sa, pattern, &ctx_mae, error);
2123         if (rc != 0)
2124                 goto fail_encap_parse_init;
2125
2126         rc = sfc_flow_parse_pattern(sfc_flow_items, RTE_DIM(sfc_flow_items),
2127                                     pattern, &ctx, error);
2128         if (rc != 0)
2129                 goto fail_parse_pattern;
2130
2131         rc = sfc_mae_rule_process_pattern_data(&ctx_mae, error);
2132         if (rc != 0)
2133                 goto fail_process_pattern_data;
2134
2135         rc = sfc_mae_rule_process_outer(sa, &ctx_mae, &spec->outer_rule, error);
2136         if (rc != 0)
2137                 goto fail_process_outer;
2138
2139         if (!efx_mae_match_spec_is_valid(sa->nic, ctx_mae.match_spec_action)) {
2140                 rc = rte_flow_error_set(error, ENOTSUP,
2141                                         RTE_FLOW_ERROR_TYPE_ITEM, NULL,
2142                                         "Inconsistent pattern");
2143                 goto fail_validate_match_spec_action;
2144         }
2145
2146         spec->match_spec = ctx_mae.match_spec_action;
2147
2148         return 0;
2149
2150 fail_validate_match_spec_action:
2151 fail_process_outer:
2152 fail_process_pattern_data:
2153 fail_parse_pattern:
2154         sfc_mae_rule_encap_parse_fini(sa, &ctx_mae);
2155
2156 fail_encap_parse_init:
2157         efx_mae_match_spec_fini(sa->nic, ctx_mae.match_spec_action);
2158
2159 fail_init_match_spec_action:
2160         return rc;
2161 }
2162
2163 /*
2164  * An action supported by MAE may correspond to a bundle of RTE flow actions,
2165  * in example, VLAN_PUSH = OF_PUSH_VLAN + OF_VLAN_SET_VID + OF_VLAN_SET_PCP.
2166  * That is, related RTE flow actions need to be tracked as parts of a whole
2167  * so that they can be combined into a single action and submitted to MAE
2168  * representation of a given rule's action set.
2169  *
2170  * Each RTE flow action provided by an application gets classified as
2171  * one belonging to some bundle type. If an action is not supposed to
2172  * belong to any bundle, or if this action is END, it is described as
2173  * one belonging to a dummy bundle of type EMPTY.
2174  *
2175  * A currently tracked bundle will be submitted if a repeating
2176  * action or an action of different bundle type follows.
2177  */
2178
2179 enum sfc_mae_actions_bundle_type {
2180         SFC_MAE_ACTIONS_BUNDLE_EMPTY = 0,
2181         SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH,
2182 };
2183
2184 struct sfc_mae_actions_bundle {
2185         enum sfc_mae_actions_bundle_type        type;
2186
2187         /* Indicates actions already tracked by the current bundle */
2188         uint64_t                                actions_mask;
2189
2190         /* Parameters used by SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH */
2191         rte_be16_t                              vlan_push_tpid;
2192         rte_be16_t                              vlan_push_tci;
2193 };
2194
2195 /*
2196  * Combine configuration of RTE flow actions tracked by the bundle into a
2197  * single action and submit the result to MAE action set specification.
2198  * Do nothing in the case of dummy action bundle.
2199  */
2200 static int
2201 sfc_mae_actions_bundle_submit(const struct sfc_mae_actions_bundle *bundle,
2202                               efx_mae_actions_t *spec)
2203 {
2204         int rc = 0;
2205
2206         switch (bundle->type) {
2207         case SFC_MAE_ACTIONS_BUNDLE_EMPTY:
2208                 break;
2209         case SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH:
2210                 rc = efx_mae_action_set_populate_vlan_push(
2211                         spec, bundle->vlan_push_tpid, bundle->vlan_push_tci);
2212                 break;
2213         default:
2214                 SFC_ASSERT(B_FALSE);
2215                 break;
2216         }
2217
2218         return rc;
2219 }
2220
2221 /*
2222  * Given the type of the next RTE flow action in the line, decide
2223  * whether a new bundle is about to start, and, if this is the case,
2224  * submit and reset the current bundle.
2225  */
2226 static int
2227 sfc_mae_actions_bundle_sync(const struct rte_flow_action *action,
2228                             struct sfc_mae_actions_bundle *bundle,
2229                             efx_mae_actions_t *spec,
2230                             struct rte_flow_error *error)
2231 {
2232         enum sfc_mae_actions_bundle_type bundle_type_new;
2233         int rc;
2234
2235         switch (action->type) {
2236         case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
2237         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
2238         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP:
2239                 bundle_type_new = SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH;
2240                 break;
2241         default:
2242                 /*
2243                  * Self-sufficient actions, including END, are handled in this
2244                  * case. No checks for unsupported actions are needed here
2245                  * because parsing doesn't occur at this point.
2246                  */
2247                 bundle_type_new = SFC_MAE_ACTIONS_BUNDLE_EMPTY;
2248                 break;
2249         }
2250
2251         if (bundle_type_new != bundle->type ||
2252             (bundle->actions_mask & (1ULL << action->type)) != 0) {
2253                 rc = sfc_mae_actions_bundle_submit(bundle, spec);
2254                 if (rc != 0)
2255                         goto fail_submit;
2256
2257                 memset(bundle, 0, sizeof(*bundle));
2258         }
2259
2260         bundle->type = bundle_type_new;
2261
2262         return 0;
2263
2264 fail_submit:
2265         return rte_flow_error_set(error, rc,
2266                         RTE_FLOW_ERROR_TYPE_ACTION, NULL,
2267                         "Failed to request the (group of) action(s)");
2268 }
2269
2270 static void
2271 sfc_mae_rule_parse_action_of_push_vlan(
2272                             const struct rte_flow_action_of_push_vlan *conf,
2273                             struct sfc_mae_actions_bundle *bundle)
2274 {
2275         bundle->vlan_push_tpid = conf->ethertype;
2276 }
2277
2278 static void
2279 sfc_mae_rule_parse_action_of_set_vlan_vid(
2280                             const struct rte_flow_action_of_set_vlan_vid *conf,
2281                             struct sfc_mae_actions_bundle *bundle)
2282 {
2283         bundle->vlan_push_tci |= (conf->vlan_vid &
2284                                   rte_cpu_to_be_16(RTE_LEN2MASK(12, uint16_t)));
2285 }
2286
2287 static void
2288 sfc_mae_rule_parse_action_of_set_vlan_pcp(
2289                             const struct rte_flow_action_of_set_vlan_pcp *conf,
2290                             struct sfc_mae_actions_bundle *bundle)
2291 {
2292         uint16_t vlan_tci_pcp = (uint16_t)(conf->vlan_pcp &
2293                                            RTE_LEN2MASK(3, uint8_t)) << 13;
2294
2295         bundle->vlan_push_tci |= rte_cpu_to_be_16(vlan_tci_pcp);
2296 }
2297
2298 struct sfc_mae_parsed_item {
2299         const struct rte_flow_item      *item;
2300         size_t                          proto_header_ofst;
2301         size_t                          proto_header_size;
2302 };
2303
2304 /*
2305  * For each 16-bit word of the given header, override
2306  * bits enforced by the corresponding 16-bit mask.
2307  */
2308 static void
2309 sfc_mae_header_force_item_masks(uint8_t *header_buf,
2310                                 const struct sfc_mae_parsed_item *parsed_items,
2311                                 unsigned int nb_parsed_items)
2312 {
2313         unsigned int item_idx;
2314
2315         for (item_idx = 0; item_idx < nb_parsed_items; ++item_idx) {
2316                 const struct sfc_mae_parsed_item *parsed_item;
2317                 const struct rte_flow_item *item;
2318                 size_t proto_header_size;
2319                 size_t ofst;
2320
2321                 parsed_item = &parsed_items[item_idx];
2322                 proto_header_size = parsed_item->proto_header_size;
2323                 item = parsed_item->item;
2324
2325                 for (ofst = 0; ofst < proto_header_size;
2326                      ofst += sizeof(rte_be16_t)) {
2327                         rte_be16_t *wp = RTE_PTR_ADD(header_buf, ofst);
2328                         const rte_be16_t *w_maskp;
2329                         const rte_be16_t *w_specp;
2330
2331                         w_maskp = RTE_PTR_ADD(item->mask, ofst);
2332                         w_specp = RTE_PTR_ADD(item->spec, ofst);
2333
2334                         *wp &= ~(*w_maskp);
2335                         *wp |= (*w_specp & *w_maskp);
2336                 }
2337
2338                 header_buf += proto_header_size;
2339         }
2340 }
2341
2342 #define SFC_IPV4_TTL_DEF        0x40
2343 #define SFC_IPV6_VTC_FLOW_DEF   0x60000000
2344 #define SFC_IPV6_HOP_LIMITS_DEF 0xff
2345 #define SFC_VXLAN_FLAGS_DEF     0x08000000
2346
2347 static int
2348 sfc_mae_rule_parse_action_vxlan_encap(
2349                             struct sfc_mae *mae,
2350                             const struct rte_flow_action_vxlan_encap *conf,
2351                             efx_mae_actions_t *spec,
2352                             struct rte_flow_error *error)
2353 {
2354         struct sfc_mae_bounce_eh *bounce_eh = &mae->bounce_eh;
2355         struct rte_flow_item *pattern = conf->definition;
2356         uint8_t *buf = bounce_eh->buf;
2357
2358         /* This array will keep track of non-VOID pattern items. */
2359         struct sfc_mae_parsed_item parsed_items[1 /* Ethernet */ +
2360                                                 2 /* VLAN tags */ +
2361                                                 1 /* IPv4 or IPv6 */ +
2362                                                 1 /* UDP */ +
2363                                                 1 /* VXLAN */];
2364         unsigned int nb_parsed_items = 0;
2365
2366         size_t eth_ethertype_ofst = offsetof(struct rte_ether_hdr, ether_type);
2367         uint8_t dummy_buf[RTE_MAX(sizeof(struct rte_ipv4_hdr),
2368                                   sizeof(struct rte_ipv6_hdr))];
2369         struct rte_ipv4_hdr *ipv4 = (void *)dummy_buf;
2370         struct rte_ipv6_hdr *ipv6 = (void *)dummy_buf;
2371         struct rte_vxlan_hdr *vxlan = NULL;
2372         struct rte_udp_hdr *udp = NULL;
2373         unsigned int nb_vlan_tags = 0;
2374         size_t next_proto_ofst = 0;
2375         size_t ethertype_ofst = 0;
2376         uint64_t exp_items;
2377
2378         if (pattern == NULL) {
2379                 return rte_flow_error_set(error, EINVAL,
2380                                 RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
2381                                 "The encap. header definition is NULL");
2382         }
2383
2384         bounce_eh->type = EFX_TUNNEL_PROTOCOL_VXLAN;
2385         bounce_eh->size = 0;
2386
2387         /*
2388          * Process pattern items and remember non-VOID ones.
2389          * Defer applying masks until after the complete header
2390          * has been built from the pattern items.
2391          */
2392         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_ETH);
2393
2394         for (; pattern->type != RTE_FLOW_ITEM_TYPE_END; ++pattern) {
2395                 struct sfc_mae_parsed_item *parsed_item;
2396                 const uint64_t exp_items_extra_vlan[] = {
2397                         RTE_BIT64(RTE_FLOW_ITEM_TYPE_VLAN), 0
2398                 };
2399                 size_t proto_header_size;
2400                 rte_be16_t *ethertypep;
2401                 uint8_t *next_protop;
2402                 uint8_t *buf_cur;
2403
2404                 if (pattern->spec == NULL) {
2405                         return rte_flow_error_set(error, EINVAL,
2406                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
2407                                         "NULL item spec in the encap. header");
2408                 }
2409
2410                 if (pattern->mask == NULL) {
2411                         return rte_flow_error_set(error, EINVAL,
2412                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
2413                                         "NULL item mask in the encap. header");
2414                 }
2415
2416                 if (pattern->last != NULL) {
2417                         /* This is not a match pattern, so disallow range. */
2418                         return rte_flow_error_set(error, EINVAL,
2419                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
2420                                         "Range item in the encap. header");
2421                 }
2422
2423                 if (pattern->type == RTE_FLOW_ITEM_TYPE_VOID) {
2424                         /* Handle VOID separately, for clarity. */
2425                         continue;
2426                 }
2427
2428                 if ((exp_items & RTE_BIT64(pattern->type)) == 0) {
2429                         return rte_flow_error_set(error, ENOTSUP,
2430                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
2431                                         "Unexpected item in the encap. header");
2432                 }
2433
2434                 parsed_item = &parsed_items[nb_parsed_items];
2435                 buf_cur = buf + bounce_eh->size;
2436
2437                 switch (pattern->type) {
2438                 case RTE_FLOW_ITEM_TYPE_ETH:
2439                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_ETH,
2440                                                exp_items);
2441                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_eth,
2442                                                   hdr) != 0);
2443
2444                         proto_header_size = sizeof(struct rte_ether_hdr);
2445
2446                         ethertype_ofst = eth_ethertype_ofst;
2447
2448                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_VLAN) |
2449                                     RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV4) |
2450                                     RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV6);
2451                         break;
2452                 case RTE_FLOW_ITEM_TYPE_VLAN:
2453                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_VLAN,
2454                                                exp_items);
2455                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_vlan,
2456                                                   hdr) != 0);
2457
2458                         proto_header_size = sizeof(struct rte_vlan_hdr);
2459
2460                         ethertypep = RTE_PTR_ADD(buf, eth_ethertype_ofst);
2461                         *ethertypep = RTE_BE16(RTE_ETHER_TYPE_QINQ);
2462
2463                         ethertypep = RTE_PTR_ADD(buf, ethertype_ofst);
2464                         *ethertypep = RTE_BE16(RTE_ETHER_TYPE_VLAN);
2465
2466                         ethertype_ofst =
2467                             bounce_eh->size +
2468                             offsetof(struct rte_vlan_hdr, eth_proto);
2469
2470                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV4) |
2471                                     RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV6);
2472                         exp_items |= exp_items_extra_vlan[nb_vlan_tags];
2473
2474                         ++nb_vlan_tags;
2475                         break;
2476                 case RTE_FLOW_ITEM_TYPE_IPV4:
2477                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_IPV4,
2478                                                exp_items);
2479                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_ipv4,
2480                                                   hdr) != 0);
2481
2482                         proto_header_size = sizeof(struct rte_ipv4_hdr);
2483
2484                         ethertypep = RTE_PTR_ADD(buf, ethertype_ofst);
2485                         *ethertypep = RTE_BE16(RTE_ETHER_TYPE_IPV4);
2486
2487                         next_proto_ofst =
2488                             bounce_eh->size +
2489                             offsetof(struct rte_ipv4_hdr, next_proto_id);
2490
2491                         ipv4 = (struct rte_ipv4_hdr *)buf_cur;
2492
2493                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_UDP);
2494                         break;
2495                 case RTE_FLOW_ITEM_TYPE_IPV6:
2496                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_IPV6,
2497                                                exp_items);
2498                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_ipv6,
2499                                                   hdr) != 0);
2500
2501                         proto_header_size = sizeof(struct rte_ipv6_hdr);
2502
2503                         ethertypep = RTE_PTR_ADD(buf, ethertype_ofst);
2504                         *ethertypep = RTE_BE16(RTE_ETHER_TYPE_IPV6);
2505
2506                         next_proto_ofst = bounce_eh->size +
2507                                           offsetof(struct rte_ipv6_hdr, proto);
2508
2509                         ipv6 = (struct rte_ipv6_hdr *)buf_cur;
2510
2511                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_UDP);
2512                         break;
2513                 case RTE_FLOW_ITEM_TYPE_UDP:
2514                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_UDP,
2515                                                exp_items);
2516                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_udp,
2517                                                   hdr) != 0);
2518
2519                         proto_header_size = sizeof(struct rte_udp_hdr);
2520
2521                         next_protop = RTE_PTR_ADD(buf, next_proto_ofst);
2522                         *next_protop = IPPROTO_UDP;
2523
2524                         udp = (struct rte_udp_hdr *)buf_cur;
2525
2526                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_VXLAN);
2527                         break;
2528                 case RTE_FLOW_ITEM_TYPE_VXLAN:
2529                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_VXLAN,
2530                                                exp_items);
2531                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_vxlan,
2532                                                   hdr) != 0);
2533
2534                         proto_header_size = sizeof(struct rte_vxlan_hdr);
2535
2536                         vxlan = (struct rte_vxlan_hdr *)buf_cur;
2537
2538                         udp->dst_port = RTE_BE16(RTE_VXLAN_DEFAULT_PORT);
2539                         udp->dgram_len = RTE_BE16(sizeof(*udp) +
2540                                                   sizeof(*vxlan));
2541                         udp->dgram_cksum = 0;
2542
2543                         exp_items = 0;
2544                         break;
2545                 default:
2546                         return rte_flow_error_set(error, ENOTSUP,
2547                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
2548                                         "Unknown item in the encap. header");
2549                 }
2550
2551                 if (bounce_eh->size + proto_header_size > bounce_eh->buf_size) {
2552                         return rte_flow_error_set(error, E2BIG,
2553                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
2554                                         "The encap. header is too big");
2555                 }
2556
2557                 if ((proto_header_size & 1) != 0) {
2558                         return rte_flow_error_set(error, EINVAL,
2559                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
2560                                         "Odd layer size in the encap. header");
2561                 }
2562
2563                 rte_memcpy(buf_cur, pattern->spec, proto_header_size);
2564                 bounce_eh->size += proto_header_size;
2565
2566                 parsed_item->item = pattern;
2567                 parsed_item->proto_header_size = proto_header_size;
2568                 ++nb_parsed_items;
2569         }
2570
2571         if (exp_items != 0) {
2572                 /* Parsing item VXLAN would have reset exp_items to 0. */
2573                 return rte_flow_error_set(error, ENOTSUP,
2574                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
2575                                         "No item VXLAN in the encap. header");
2576         }
2577
2578         /* One of the pointers (ipv4, ipv6) refers to a dummy area. */
2579         ipv4->version_ihl = RTE_IPV4_VHL_DEF;
2580         ipv4->time_to_live = SFC_IPV4_TTL_DEF;
2581         ipv4->total_length = RTE_BE16(sizeof(*ipv4) + sizeof(*udp) +
2582                                       sizeof(*vxlan));
2583         /* The HW cannot compute this checksum. */
2584         ipv4->hdr_checksum = 0;
2585         ipv4->hdr_checksum = rte_ipv4_cksum(ipv4);
2586
2587         ipv6->vtc_flow = RTE_BE32(SFC_IPV6_VTC_FLOW_DEF);
2588         ipv6->hop_limits = SFC_IPV6_HOP_LIMITS_DEF;
2589         ipv6->payload_len = udp->dgram_len;
2590
2591         vxlan->vx_flags = RTE_BE32(SFC_VXLAN_FLAGS_DEF);
2592
2593         /* Take care of the masks. */
2594         sfc_mae_header_force_item_masks(buf, parsed_items, nb_parsed_items);
2595
2596         return (spec != NULL) ? efx_mae_action_set_populate_encap(spec) : 0;
2597 }
2598
2599 static int
2600 sfc_mae_rule_parse_action_mark(const struct rte_flow_action_mark *conf,
2601                                efx_mae_actions_t *spec)
2602 {
2603         return efx_mae_action_set_populate_mark(spec, conf->id);
2604 }
2605
2606 static int
2607 sfc_mae_rule_parse_action_phy_port(struct sfc_adapter *sa,
2608                                    const struct rte_flow_action_phy_port *conf,
2609                                    efx_mae_actions_t *spec)
2610 {
2611         efx_mport_sel_t mport;
2612         uint32_t phy_port;
2613         int rc;
2614
2615         if (conf->original != 0)
2616                 phy_port = efx_nic_cfg_get(sa->nic)->enc_assigned_port;
2617         else
2618                 phy_port = conf->index;
2619
2620         rc = efx_mae_mport_by_phy_port(phy_port, &mport);
2621         if (rc != 0)
2622                 return rc;
2623
2624         return efx_mae_action_set_populate_deliver(spec, &mport);
2625 }
2626
2627 static int
2628 sfc_mae_rule_parse_action_pf_vf(struct sfc_adapter *sa,
2629                                 const struct rte_flow_action_vf *vf_conf,
2630                                 efx_mae_actions_t *spec)
2631 {
2632         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
2633         efx_mport_sel_t mport;
2634         uint32_t vf;
2635         int rc;
2636
2637         if (vf_conf == NULL)
2638                 vf = EFX_PCI_VF_INVALID;
2639         else if (vf_conf->original != 0)
2640                 vf = encp->enc_vf;
2641         else
2642                 vf = vf_conf->id;
2643
2644         rc = efx_mae_mport_by_pcie_function(encp->enc_pf, vf, &mport);
2645         if (rc != 0)
2646                 return rc;
2647
2648         return efx_mae_action_set_populate_deliver(spec, &mport);
2649 }
2650
2651 static int
2652 sfc_mae_rule_parse_action_port_id(struct sfc_adapter *sa,
2653                                   const struct rte_flow_action_port_id *conf,
2654                                   efx_mae_actions_t *spec)
2655 {
2656         struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
2657         struct sfc_mae *mae = &sa->mae;
2658         efx_mport_sel_t mport;
2659         uint16_t port_id;
2660         int rc;
2661
2662         if (conf->id > UINT16_MAX)
2663                 return EOVERFLOW;
2664
2665         port_id = (conf->original != 0) ? sas->port_id : conf->id;
2666
2667         rc = sfc_mae_switch_port_by_ethdev(mae->switch_domain_id,
2668                                            port_id, &mport);
2669         if (rc != 0)
2670                 return rc;
2671
2672         return efx_mae_action_set_populate_deliver(spec, &mport);
2673 }
2674
2675 static int
2676 sfc_mae_rule_parse_action(struct sfc_adapter *sa,
2677                           const struct rte_flow_action *action,
2678                           const struct sfc_mae_outer_rule *outer_rule,
2679                           struct sfc_mae_actions_bundle *bundle,
2680                           efx_mae_actions_t *spec,
2681                           struct rte_flow_error *error)
2682 {
2683         bool custom_error = B_FALSE;
2684         int rc = 0;
2685
2686         switch (action->type) {
2687         case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
2688                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VXLAN_DECAP,
2689                                        bundle->actions_mask);
2690                 if (outer_rule == NULL ||
2691                     outer_rule->encap_type != EFX_TUNNEL_PROTOCOL_VXLAN)
2692                         rc = EINVAL;
2693                 else
2694                         rc = efx_mae_action_set_populate_decap(spec);
2695                 break;
2696         case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN:
2697                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_POP_VLAN,
2698                                        bundle->actions_mask);
2699                 rc = efx_mae_action_set_populate_vlan_pop(spec);
2700                 break;
2701         case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
2702                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN,
2703                                        bundle->actions_mask);
2704                 sfc_mae_rule_parse_action_of_push_vlan(action->conf, bundle);
2705                 break;
2706         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
2707                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID,
2708                                        bundle->actions_mask);
2709                 sfc_mae_rule_parse_action_of_set_vlan_vid(action->conf, bundle);
2710                 break;
2711         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP:
2712                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP,
2713                                        bundle->actions_mask);
2714                 sfc_mae_rule_parse_action_of_set_vlan_pcp(action->conf, bundle);
2715                 break;
2716         case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
2717                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP,
2718                                        bundle->actions_mask);
2719                 rc = sfc_mae_rule_parse_action_vxlan_encap(&sa->mae,
2720                                                            action->conf,
2721                                                            spec, error);
2722                 custom_error = B_TRUE;
2723                 break;
2724         case RTE_FLOW_ACTION_TYPE_FLAG:
2725                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_FLAG,
2726                                        bundle->actions_mask);
2727                 rc = efx_mae_action_set_populate_flag(spec);
2728                 break;
2729         case RTE_FLOW_ACTION_TYPE_MARK:
2730                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_MARK,
2731                                        bundle->actions_mask);
2732                 rc = sfc_mae_rule_parse_action_mark(action->conf, spec);
2733                 break;
2734         case RTE_FLOW_ACTION_TYPE_PHY_PORT:
2735                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_PHY_PORT,
2736                                        bundle->actions_mask);
2737                 rc = sfc_mae_rule_parse_action_phy_port(sa, action->conf, spec);
2738                 break;
2739         case RTE_FLOW_ACTION_TYPE_PF:
2740                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_PF,
2741                                        bundle->actions_mask);
2742                 rc = sfc_mae_rule_parse_action_pf_vf(sa, NULL, spec);
2743                 break;
2744         case RTE_FLOW_ACTION_TYPE_VF:
2745                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VF,
2746                                        bundle->actions_mask);
2747                 rc = sfc_mae_rule_parse_action_pf_vf(sa, action->conf, spec);
2748                 break;
2749         case RTE_FLOW_ACTION_TYPE_PORT_ID:
2750                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_PORT_ID,
2751                                        bundle->actions_mask);
2752                 rc = sfc_mae_rule_parse_action_port_id(sa, action->conf, spec);
2753                 break;
2754         case RTE_FLOW_ACTION_TYPE_DROP:
2755                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_DROP,
2756                                        bundle->actions_mask);
2757                 rc = efx_mae_action_set_populate_drop(spec);
2758                 break;
2759         default:
2760                 return rte_flow_error_set(error, ENOTSUP,
2761                                 RTE_FLOW_ERROR_TYPE_ACTION, NULL,
2762                                 "Unsupported action");
2763         }
2764
2765         if (rc == 0) {
2766                 bundle->actions_mask |= (1ULL << action->type);
2767         } else if (!custom_error) {
2768                 rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ACTION,
2769                                 NULL, "Failed to request the action");
2770         }
2771
2772         return rc;
2773 }
2774
2775 static void
2776 sfc_mae_bounce_eh_invalidate(struct sfc_mae_bounce_eh *bounce_eh)
2777 {
2778         bounce_eh->type = EFX_TUNNEL_PROTOCOL_NONE;
2779 }
2780
2781 static int
2782 sfc_mae_process_encap_header(struct sfc_adapter *sa,
2783                              const struct sfc_mae_bounce_eh *bounce_eh,
2784                              struct sfc_mae_encap_header **encap_headerp)
2785 {
2786         if (bounce_eh->type == EFX_TUNNEL_PROTOCOL_NONE) {
2787                 encap_headerp = NULL;
2788                 return 0;
2789         }
2790
2791         *encap_headerp = sfc_mae_encap_header_attach(sa, bounce_eh);
2792         if (*encap_headerp != NULL)
2793                 return 0;
2794
2795         return sfc_mae_encap_header_add(sa, bounce_eh, encap_headerp);
2796 }
2797
2798 int
2799 sfc_mae_rule_parse_actions(struct sfc_adapter *sa,
2800                            const struct rte_flow_action actions[],
2801                            struct sfc_flow_spec_mae *spec_mae,
2802                            struct rte_flow_error *error)
2803 {
2804         struct sfc_mae_encap_header *encap_header = NULL;
2805         struct sfc_mae_actions_bundle bundle = {0};
2806         const struct rte_flow_action *action;
2807         struct sfc_mae *mae = &sa->mae;
2808         efx_mae_actions_t *spec;
2809         int rc;
2810
2811         rte_errno = 0;
2812
2813         if (actions == NULL) {
2814                 return rte_flow_error_set(error, EINVAL,
2815                                 RTE_FLOW_ERROR_TYPE_ACTION_NUM, NULL,
2816                                 "NULL actions");
2817         }
2818
2819         rc = efx_mae_action_set_spec_init(sa->nic, &spec);
2820         if (rc != 0)
2821                 goto fail_action_set_spec_init;
2822
2823         /* Cleanup after previous encap. header bounce buffer usage. */
2824         sfc_mae_bounce_eh_invalidate(&mae->bounce_eh);
2825
2826         for (action = actions;
2827              action->type != RTE_FLOW_ACTION_TYPE_END; ++action) {
2828                 rc = sfc_mae_actions_bundle_sync(action, &bundle, spec, error);
2829                 if (rc != 0)
2830                         goto fail_rule_parse_action;
2831
2832                 rc = sfc_mae_rule_parse_action(sa, action, spec_mae->outer_rule,
2833                                                &bundle, spec, error);
2834                 if (rc != 0)
2835                         goto fail_rule_parse_action;
2836         }
2837
2838         rc = sfc_mae_actions_bundle_sync(action, &bundle, spec, error);
2839         if (rc != 0)
2840                 goto fail_rule_parse_action;
2841
2842         rc = sfc_mae_process_encap_header(sa, &mae->bounce_eh, &encap_header);
2843         if (rc != 0)
2844                 goto fail_process_encap_header;
2845
2846         spec_mae->action_set = sfc_mae_action_set_attach(sa, encap_header,
2847                                                          spec);
2848         if (spec_mae->action_set != NULL) {
2849                 sfc_mae_encap_header_del(sa, encap_header);
2850                 efx_mae_action_set_spec_fini(sa->nic, spec);
2851                 return 0;
2852         }
2853
2854         rc = sfc_mae_action_set_add(sa, spec, encap_header,
2855                                     &spec_mae->action_set);
2856         if (rc != 0)
2857                 goto fail_action_set_add;
2858
2859         return 0;
2860
2861 fail_action_set_add:
2862         sfc_mae_encap_header_del(sa, encap_header);
2863
2864 fail_process_encap_header:
2865 fail_rule_parse_action:
2866         efx_mae_action_set_spec_fini(sa->nic, spec);
2867
2868 fail_action_set_spec_init:
2869         if (rc > 0 && rte_errno == 0) {
2870                 rc = rte_flow_error_set(error, rc,
2871                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2872                         NULL, "Failed to process the action");
2873         }
2874         return rc;
2875 }
2876
2877 static bool
2878 sfc_mae_rules_class_cmp(struct sfc_adapter *sa,
2879                         const efx_mae_match_spec_t *left,
2880                         const efx_mae_match_spec_t *right)
2881 {
2882         bool have_same_class;
2883         int rc;
2884
2885         rc = efx_mae_match_specs_class_cmp(sa->nic, left, right,
2886                                            &have_same_class);
2887
2888         return (rc == 0) ? have_same_class : false;
2889 }
2890
2891 static int
2892 sfc_mae_outer_rule_class_verify(struct sfc_adapter *sa,
2893                                 struct sfc_mae_outer_rule *rule)
2894 {
2895         struct sfc_mae_fw_rsrc *fw_rsrc = &rule->fw_rsrc;
2896         struct sfc_mae_outer_rule *entry;
2897         struct sfc_mae *mae = &sa->mae;
2898
2899         if (fw_rsrc->rule_id.id != EFX_MAE_RSRC_ID_INVALID) {
2900                 /* An active rule is reused. It's class is wittingly valid. */
2901                 return 0;
2902         }
2903
2904         TAILQ_FOREACH_REVERSE(entry, &mae->outer_rules,
2905                               sfc_mae_outer_rules, entries) {
2906                 const efx_mae_match_spec_t *left = entry->match_spec;
2907                 const efx_mae_match_spec_t *right = rule->match_spec;
2908
2909                 if (entry == rule)
2910                         continue;
2911
2912                 if (sfc_mae_rules_class_cmp(sa, left, right))
2913                         return 0;
2914         }
2915
2916         sfc_info(sa, "for now, the HW doesn't support rule validation, and HW "
2917                  "support for outer frame pattern items is not guaranteed; "
2918                  "other than that, the items are valid from SW standpoint");
2919         return 0;
2920 }
2921
2922 static int
2923 sfc_mae_action_rule_class_verify(struct sfc_adapter *sa,
2924                                  struct sfc_flow_spec_mae *spec)
2925 {
2926         const struct rte_flow *entry;
2927
2928         TAILQ_FOREACH_REVERSE(entry, &sa->flow_list, sfc_flow_list, entries) {
2929                 const struct sfc_flow_spec *entry_spec = &entry->spec;
2930                 const struct sfc_flow_spec_mae *es_mae = &entry_spec->mae;
2931                 const efx_mae_match_spec_t *left = es_mae->match_spec;
2932                 const efx_mae_match_spec_t *right = spec->match_spec;
2933
2934                 switch (entry_spec->type) {
2935                 case SFC_FLOW_SPEC_FILTER:
2936                         /* Ignore VNIC-level flows */
2937                         break;
2938                 case SFC_FLOW_SPEC_MAE:
2939                         if (sfc_mae_rules_class_cmp(sa, left, right))
2940                                 return 0;
2941                         break;
2942                 default:
2943                         SFC_ASSERT(false);
2944                 }
2945         }
2946
2947         sfc_info(sa, "for now, the HW doesn't support rule validation, and HW "
2948                  "support for inner frame pattern items is not guaranteed; "
2949                  "other than that, the items are valid from SW standpoint");
2950         return 0;
2951 }
2952
2953 /**
2954  * Confirm that a given flow can be accepted by the FW.
2955  *
2956  * @param sa
2957  *   Software adapter context
2958  * @param flow
2959  *   Flow to be verified
2960  * @return
2961  *   Zero on success and non-zero in the case of error.
2962  *   A special value of EAGAIN indicates that the adapter is
2963  *   not in started state. This state is compulsory because
2964  *   it only makes sense to compare the rule class of the flow
2965  *   being validated with classes of the active rules.
2966  *   Such classes are wittingly supported by the FW.
2967  */
2968 int
2969 sfc_mae_flow_verify(struct sfc_adapter *sa,
2970                     struct rte_flow *flow)
2971 {
2972         struct sfc_flow_spec *spec = &flow->spec;
2973         struct sfc_flow_spec_mae *spec_mae = &spec->mae;
2974         struct sfc_mae_outer_rule *outer_rule = spec_mae->outer_rule;
2975         int rc;
2976
2977         SFC_ASSERT(sfc_adapter_is_locked(sa));
2978
2979         if (sa->state != SFC_ADAPTER_STARTED)
2980                 return EAGAIN;
2981
2982         if (outer_rule != NULL) {
2983                 rc = sfc_mae_outer_rule_class_verify(sa, outer_rule);
2984                 if (rc != 0)
2985                         return rc;
2986         }
2987
2988         return sfc_mae_action_rule_class_verify(sa, spec_mae);
2989 }
2990
2991 int
2992 sfc_mae_flow_insert(struct sfc_adapter *sa,
2993                     struct rte_flow *flow)
2994 {
2995         struct sfc_flow_spec *spec = &flow->spec;
2996         struct sfc_flow_spec_mae *spec_mae = &spec->mae;
2997         struct sfc_mae_outer_rule *outer_rule = spec_mae->outer_rule;
2998         struct sfc_mae_action_set *action_set = spec_mae->action_set;
2999         struct sfc_mae_fw_rsrc *fw_rsrc = &action_set->fw_rsrc;
3000         int rc;
3001
3002         SFC_ASSERT(spec_mae->rule_id.id == EFX_MAE_RSRC_ID_INVALID);
3003         SFC_ASSERT(action_set != NULL);
3004
3005         if (outer_rule != NULL) {
3006                 rc = sfc_mae_outer_rule_enable(sa, outer_rule,
3007                                                spec_mae->match_spec);
3008                 if (rc != 0)
3009                         goto fail_outer_rule_enable;
3010         }
3011
3012         rc = sfc_mae_action_set_enable(sa, action_set);
3013         if (rc != 0)
3014                 goto fail_action_set_enable;
3015
3016         rc = efx_mae_action_rule_insert(sa->nic, spec_mae->match_spec,
3017                                         NULL, &fw_rsrc->aset_id,
3018                                         &spec_mae->rule_id);
3019         if (rc != 0)
3020                 goto fail_action_rule_insert;
3021
3022         sfc_dbg(sa, "enabled flow=%p: AR_ID=0x%08x",
3023                 flow, spec_mae->rule_id.id);
3024
3025         return 0;
3026
3027 fail_action_rule_insert:
3028         sfc_mae_action_set_disable(sa, action_set);
3029
3030 fail_action_set_enable:
3031         if (outer_rule != NULL)
3032                 sfc_mae_outer_rule_disable(sa, outer_rule);
3033
3034 fail_outer_rule_enable:
3035         return rc;
3036 }
3037
3038 int
3039 sfc_mae_flow_remove(struct sfc_adapter *sa,
3040                     struct rte_flow *flow)
3041 {
3042         struct sfc_flow_spec *spec = &flow->spec;
3043         struct sfc_flow_spec_mae *spec_mae = &spec->mae;
3044         struct sfc_mae_action_set *action_set = spec_mae->action_set;
3045         struct sfc_mae_outer_rule *outer_rule = spec_mae->outer_rule;
3046         int rc;
3047
3048         SFC_ASSERT(spec_mae->rule_id.id != EFX_MAE_RSRC_ID_INVALID);
3049         SFC_ASSERT(action_set != NULL);
3050
3051         rc = efx_mae_action_rule_remove(sa->nic, &spec_mae->rule_id);
3052         if (rc != 0) {
3053                 sfc_err(sa, "failed to disable flow=%p with AR_ID=0x%08x: %s",
3054                         flow, spec_mae->rule_id.id, strerror(rc));
3055         }
3056         sfc_dbg(sa, "disabled flow=%p with AR_ID=0x%08x",
3057                 flow, spec_mae->rule_id.id);
3058         spec_mae->rule_id.id = EFX_MAE_RSRC_ID_INVALID;
3059
3060         sfc_mae_action_set_disable(sa, action_set);
3061
3062         if (outer_rule != NULL)
3063                 sfc_mae_outer_rule_disable(sa, outer_rule);
3064
3065         return 0;
3066 }