drivers/net/ethernet/sfc/tc.c:450 efx_tc_flower_replace() warn: missing unwind goto?
From: Dan Carpenter
Date: Sat May 20 2023 - 04:32:20 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d3f704310cc7e04e89d178ea080a2e74dae9db67
commit: b7f5e17b3bb96165979f55f2821190a77f984d0e sfc: handle enc keys in efx_tc_flower_parse_match()
config: ia64-randconfig-m041-20230514
compiler: ia64-linux-gcc (GCC) 12.1.0
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Reported-by: Dan Carpenter <error27@xxxxxxxxx>
| Closes: https://lore.kernel.org/r/202305200745.xmIlkqjH-lkp@xxxxxxxxx/
smatch warnings:
drivers/net/ethernet/sfc/tc.c:450 efx_tc_flower_replace() warn: missing unwind goto?
vim +450 drivers/net/ethernet/sfc/tc.c
d902e1a737d44e Edward Cree 2022-09-26 382 static int efx_tc_flower_replace(struct efx_nic *efx,
d902e1a737d44e Edward Cree 2022-09-26 383 struct net_device *net_dev,
d902e1a737d44e Edward Cree 2022-09-26 384 struct flow_cls_offload *tc,
d902e1a737d44e Edward Cree 2022-09-26 385 struct efx_rep *efv)
d902e1a737d44e Edward Cree 2022-09-26 386 {
d902e1a737d44e Edward Cree 2022-09-26 387 struct flow_rule *fr = flow_cls_offload_flow_rule(tc);
d902e1a737d44e Edward Cree 2022-09-26 388 struct netlink_ext_ack *extack = tc->common.extack;
d902e1a737d44e Edward Cree 2022-09-26 389 struct efx_tc_flow_rule *rule = NULL, *old;
d902e1a737d44e Edward Cree 2022-09-26 390 struct efx_tc_action_set *act = NULL;
d902e1a737d44e Edward Cree 2022-09-26 391 const struct flow_action_entry *fa;
d902e1a737d44e Edward Cree 2022-09-26 392 struct efx_rep *from_efv, *to_efv;
d902e1a737d44e Edward Cree 2022-09-26 393 struct efx_tc_match match;
d902e1a737d44e Edward Cree 2022-09-26 394 s64 rc;
d902e1a737d44e Edward Cree 2022-09-26 395 int i;
d902e1a737d44e Edward Cree 2022-09-26 396
d902e1a737d44e Edward Cree 2022-09-26 397 if (!tc_can_offload_extack(efx->net_dev, extack))
d902e1a737d44e Edward Cree 2022-09-26 398 return -EOPNOTSUPP;
d902e1a737d44e Edward Cree 2022-09-26 399 if (WARN_ON(!efx->tc))
d902e1a737d44e Edward Cree 2022-09-26 400 return -ENETDOWN;
d902e1a737d44e Edward Cree 2022-09-26 401 if (WARN_ON(!efx->tc->up))
d902e1a737d44e Edward Cree 2022-09-26 402 return -ENETDOWN;
d902e1a737d44e Edward Cree 2022-09-26 403
d902e1a737d44e Edward Cree 2022-09-26 404 from_efv = efx_tc_flower_lookup_efv(efx, net_dev);
d902e1a737d44e Edward Cree 2022-09-26 405 if (IS_ERR(from_efv)) {
d902e1a737d44e Edward Cree 2022-09-26 406 /* Might be a tunnel decap rule from an indirect block.
d902e1a737d44e Edward Cree 2022-09-26 407 * Support for those not implemented yet.
d902e1a737d44e Edward Cree 2022-09-26 408 */
d902e1a737d44e Edward Cree 2022-09-26 409 return -EOPNOTSUPP;
d902e1a737d44e Edward Cree 2022-09-26 410 }
d902e1a737d44e Edward Cree 2022-09-26 411
d902e1a737d44e Edward Cree 2022-09-26 412 if (efv != from_efv) {
d902e1a737d44e Edward Cree 2022-09-26 413 /* can't happen */
ad1c80d5f777b8 Edward Cree 2022-10-18 414 NL_SET_ERR_MSG_FMT_MOD(extack, "for %s efv is %snull but from_efv is %snull (can't happen)",
d902e1a737d44e Edward Cree 2022-09-26 415 netdev_name(net_dev), efv ? "non-" : "",
d902e1a737d44e Edward Cree 2022-09-26 416 from_efv ? "non-" : "");
d902e1a737d44e Edward Cree 2022-09-26 417 return -EINVAL;
d902e1a737d44e Edward Cree 2022-09-26 418 }
d902e1a737d44e Edward Cree 2022-09-26 419
d902e1a737d44e Edward Cree 2022-09-26 420 /* Parse match */
d902e1a737d44e Edward Cree 2022-09-26 421 memset(&match, 0, sizeof(match));
d902e1a737d44e Edward Cree 2022-09-26 422 rc = efx_tc_flower_external_mport(efx, from_efv);
d902e1a737d44e Edward Cree 2022-09-26 423 if (rc < 0) {
ad1c80d5f777b8 Edward Cree 2022-10-18 424 NL_SET_ERR_MSG_MOD(extack, "Failed to identify ingress m-port");
d902e1a737d44e Edward Cree 2022-09-26 425 return rc;
d902e1a737d44e Edward Cree 2022-09-26 426 }
d902e1a737d44e Edward Cree 2022-09-26 427 match.value.ingress_port = rc;
d902e1a737d44e Edward Cree 2022-09-26 428 match.mask.ingress_port = ~0;
d902e1a737d44e Edward Cree 2022-09-26 429 rc = efx_tc_flower_parse_match(efx, fr, &match, extack);
d902e1a737d44e Edward Cree 2022-09-26 430 if (rc)
d902e1a737d44e Edward Cree 2022-09-26 431 return rc;
b7f5e17b3bb961 Edward Cree 2023-03-27 432 if (efx_tc_match_is_encap(&match.mask)) {
b7f5e17b3bb961 Edward Cree 2023-03-27 433 NL_SET_ERR_MSG_MOD(extack, "Ingress enc_key matches not supported");
b7f5e17b3bb961 Edward Cree 2023-03-27 434 rc = -EOPNOTSUPP;
b7f5e17b3bb961 Edward Cree 2023-03-27 435 goto release;
This goto confuses Smatch. It could be converted to a direct return.
b7f5e17b3bb961 Edward Cree 2023-03-27 436 }
d902e1a737d44e Edward Cree 2022-09-26 437
d902e1a737d44e Edward Cree 2022-09-26 438 if (tc->common.chain_index) {
ad1c80d5f777b8 Edward Cree 2022-10-18 439 NL_SET_ERR_MSG_MOD(extack, "No support for nonzero chain_index");
d902e1a737d44e Edward Cree 2022-09-26 440 return -EOPNOTSUPP;
d902e1a737d44e Edward Cree 2022-09-26 441 }
d902e1a737d44e Edward Cree 2022-09-26 442 match.mask.recirc_id = 0xff;
d902e1a737d44e Edward Cree 2022-09-26 443
d902e1a737d44e Edward Cree 2022-09-26 444 rc = efx_mae_match_check_caps(efx, &match.mask, extack);
d902e1a737d44e Edward Cree 2022-09-26 445 if (rc)
d902e1a737d44e Edward Cree 2022-09-26 446 return rc;
d902e1a737d44e Edward Cree 2022-09-26 447
d902e1a737d44e Edward Cree 2022-09-26 448 rule = kzalloc(sizeof(*rule), GFP_USER);
d902e1a737d44e Edward Cree 2022-09-26 449 if (!rule)
d902e1a737d44e Edward Cree 2022-09-26 @450 return -ENOMEM;
d902e1a737d44e Edward Cree 2022-09-26 451 INIT_LIST_HEAD(&rule->acts.list);
d902e1a737d44e Edward Cree 2022-09-26 452 rule->cookie = tc->cookie;
d902e1a737d44e Edward Cree 2022-09-26 453 old = rhashtable_lookup_get_insert_fast(&efx->tc->match_action_ht,
d902e1a737d44e Edward Cree 2022-09-26 454 &rule->linkage,
d902e1a737d44e Edward Cree 2022-09-26 455 efx_tc_match_action_ht_params);
d902e1a737d44e Edward Cree 2022-09-26 456 if (old) {
d902e1a737d44e Edward Cree 2022-09-26 457 netif_dbg(efx, drv, efx->net_dev,
d902e1a737d44e Edward Cree 2022-09-26 458 "Already offloaded rule (cookie %lx)\n", tc->cookie);
d902e1a737d44e Edward Cree 2022-09-26 459 rc = -EEXIST;
d902e1a737d44e Edward Cree 2022-09-26 460 NL_SET_ERR_MSG_MOD(extack, "Rule already offloaded");
d902e1a737d44e Edward Cree 2022-09-26 461 goto release;
It looks like this error path is problematic because it will remove the
existing rule from the list. Better to just do:
if (old) {
netif_dbg(...);
NL_SET_ERR_MSG_MOD(extack, "Rule already offloaded");
kfree(rule);
return -EEXIST;
}
d902e1a737d44e Edward Cree 2022-09-26 462 }
d902e1a737d44e Edward Cree 2022-09-26 463
d902e1a737d44e Edward Cree 2022-09-26 464 /* Parse actions */
d902e1a737d44e Edward Cree 2022-09-26 465 act = kzalloc(sizeof(*act), GFP_USER);
d902e1a737d44e Edward Cree 2022-09-26 466 if (!act) {
d902e1a737d44e Edward Cree 2022-09-26 467 rc = -ENOMEM;
d902e1a737d44e Edward Cree 2022-09-26 468 goto release;
d902e1a737d44e Edward Cree 2022-09-26 469 }
d902e1a737d44e Edward Cree 2022-09-26 470
edd025ca088719 Edward Cree 2023-03-27 471 /**
edd025ca088719 Edward Cree 2023-03-27 472 * DOC: TC action translation
edd025ca088719 Edward Cree 2023-03-27 473 *
edd025ca088719 Edward Cree 2023-03-27 474 * Actions in TC are sequential and cumulative, with delivery actions
edd025ca088719 Edward Cree 2023-03-27 475 * potentially anywhere in the order. The EF100 MAE, however, takes
edd025ca088719 Edward Cree 2023-03-27 476 * an 'action set list' consisting of 'action sets', each of which is
edd025ca088719 Edward Cree 2023-03-27 477 * applied to the _original_ packet, and consists of a set of optional
edd025ca088719 Edward Cree 2023-03-27 478 * actions in a fixed order with delivery at the end.
edd025ca088719 Edward Cree 2023-03-27 479 * To translate between these two models, we maintain a 'cursor', @act,
edd025ca088719 Edward Cree 2023-03-27 480 * which describes the cumulative effect of all the packet-mutating
edd025ca088719 Edward Cree 2023-03-27 481 * actions encountered so far; on handling a delivery (mirred or drop)
edd025ca088719 Edward Cree 2023-03-27 482 * action, once the action-set has been inserted into hardware, we
edd025ca088719 Edward Cree 2023-03-27 483 * append @act to the action-set list (@rule->acts); if this is a pipe
edd025ca088719 Edward Cree 2023-03-27 484 * action (mirred mirror) we then allocate a new @act with a copy of
edd025ca088719 Edward Cree 2023-03-27 485 * the cursor state _before_ the delivery action, otherwise we set @act
edd025ca088719 Edward Cree 2023-03-27 486 * to %NULL.
edd025ca088719 Edward Cree 2023-03-27 487 * This ensures that every allocated action-set is either attached to
edd025ca088719 Edward Cree 2023-03-27 488 * @rule->acts or pointed to by @act (and never both), and that only
edd025ca088719 Edward Cree 2023-03-27 489 * those action-sets in @rule->acts exist in hardware. Consequently,
edd025ca088719 Edward Cree 2023-03-27 490 * in the failure path, @act only needs to be freed in memory, whereas
edd025ca088719 Edward Cree 2023-03-27 491 * for @rule->acts we remove each action-set from hardware before
edd025ca088719 Edward Cree 2023-03-27 492 * freeing it (efx_tc_free_action_set_list()), even if the action-set
edd025ca088719 Edward Cree 2023-03-27 493 * list itself is not in hardware.
edd025ca088719 Edward Cree 2023-03-27 494 */
d902e1a737d44e Edward Cree 2022-09-26 495 flow_action_for_each(i, fa, &fr->action) {
d902e1a737d44e Edward Cree 2022-09-26 496 struct efx_tc_action_set save;
05ccd8d8a15e6b Edward Cree 2023-03-09 497 u16 tci;
d902e1a737d44e Edward Cree 2022-09-26 498
d902e1a737d44e Edward Cree 2022-09-26 499 if (!act) {
d902e1a737d44e Edward Cree 2022-09-26 500 /* more actions after a non-pipe action */
ad1c80d5f777b8 Edward Cree 2022-10-18 501 NL_SET_ERR_MSG_MOD(extack, "Action follows non-pipe action");
d902e1a737d44e Edward Cree 2022-09-26 502 rc = -EINVAL;
d902e1a737d44e Edward Cree 2022-09-26 503 goto release;
d902e1a737d44e Edward Cree 2022-09-26 504 }
d902e1a737d44e Edward Cree 2022-09-26 505
2e0f1eb05692b4 Edward Cree 2022-11-14 506 if ((fa->id == FLOW_ACTION_REDIRECT ||
2e0f1eb05692b4 Edward Cree 2022-11-14 507 fa->id == FLOW_ACTION_MIRRED ||
2e0f1eb05692b4 Edward Cree 2022-11-14 508 fa->id == FLOW_ACTION_DROP) && fa->hw_stats) {
2e0f1eb05692b4 Edward Cree 2022-11-14 509 struct efx_tc_counter_index *ctr;
2e0f1eb05692b4 Edward Cree 2022-11-14 510
83a187a4eb3a8d Edward Cree 2022-11-14 511 /* Currently the only actions that want stats are
83a187a4eb3a8d Edward Cree 2022-11-14 512 * mirred and gact (ok, shot, trap, goto-chain), which
83a187a4eb3a8d Edward Cree 2022-11-14 513 * means we want stats just before delivery. Also,
83a187a4eb3a8d Edward Cree 2022-11-14 514 * note that tunnel_key set shouldn't change the length
83a187a4eb3a8d Edward Cree 2022-11-14 515 * — it's only the subsequent mirred that does that,
83a187a4eb3a8d Edward Cree 2022-11-14 516 * and the stats are taken _before_ the mirred action
83a187a4eb3a8d Edward Cree 2022-11-14 517 * happens.
83a187a4eb3a8d Edward Cree 2022-11-14 518 */
83a187a4eb3a8d Edward Cree 2022-11-14 519 if (!efx_tc_flower_action_order_ok(act, EFX_TC_AO_COUNT)) {
83a187a4eb3a8d Edward Cree 2022-11-14 520 /* All supported actions that count either steal
83a187a4eb3a8d Edward Cree 2022-11-14 521 * (gact shot, mirred redirect) or clone act
83a187a4eb3a8d Edward Cree 2022-11-14 522 * (mirred mirror), so we should never get two
83a187a4eb3a8d Edward Cree 2022-11-14 523 * count actions on one action_set.
83a187a4eb3a8d Edward Cree 2022-11-14 524 */
83a187a4eb3a8d Edward Cree 2022-11-14 525 NL_SET_ERR_MSG_MOD(extack, "Count-action conflict (can't happen)");
83a187a4eb3a8d Edward Cree 2022-11-14 526 rc = -EOPNOTSUPP;
83a187a4eb3a8d Edward Cree 2022-11-14 527 goto release;
83a187a4eb3a8d Edward Cree 2022-11-14 528 }
83a187a4eb3a8d Edward Cree 2022-11-14 529
2e0f1eb05692b4 Edward Cree 2022-11-14 530 if (!(fa->hw_stats & FLOW_ACTION_HW_STATS_DELAYED)) {
2e0f1eb05692b4 Edward Cree 2022-11-14 531 NL_SET_ERR_MSG_FMT_MOD(extack, "hw_stats_type %u not supported (only 'delayed')",
2e0f1eb05692b4 Edward Cree 2022-11-14 532 fa->hw_stats);
2e0f1eb05692b4 Edward Cree 2022-11-14 533 rc = -EOPNOTSUPP;
2e0f1eb05692b4 Edward Cree 2022-11-14 534 goto release;
2e0f1eb05692b4 Edward Cree 2022-11-14 535 }
2e0f1eb05692b4 Edward Cree 2022-11-14 536
2e0f1eb05692b4 Edward Cree 2022-11-14 537 ctr = efx_tc_flower_get_counter_index(efx, tc->cookie,
2e0f1eb05692b4 Edward Cree 2022-11-14 538 EFX_TC_COUNTER_TYPE_AR);
2e0f1eb05692b4 Edward Cree 2022-11-14 539 if (IS_ERR(ctr)) {
2e0f1eb05692b4 Edward Cree 2022-11-14 540 rc = PTR_ERR(ctr);
2e0f1eb05692b4 Edward Cree 2022-11-14 541 NL_SET_ERR_MSG_MOD(extack, "Failed to obtain a counter");
2e0f1eb05692b4 Edward Cree 2022-11-14 542 goto release;
2e0f1eb05692b4 Edward Cree 2022-11-14 543 }
2e0f1eb05692b4 Edward Cree 2022-11-14 544 act->count = ctr;
2e0f1eb05692b4 Edward Cree 2022-11-14 545 }
2e0f1eb05692b4 Edward Cree 2022-11-14 546
d902e1a737d44e Edward Cree 2022-09-26 547 switch (fa->id) {
d902e1a737d44e Edward Cree 2022-09-26 548 case FLOW_ACTION_DROP:
d902e1a737d44e Edward Cree 2022-09-26 549 rc = efx_mae_alloc_action_set(efx, act);
d902e1a737d44e Edward Cree 2022-09-26 550 if (rc) {
ad1c80d5f777b8 Edward Cree 2022-10-18 551 NL_SET_ERR_MSG_MOD(extack, "Failed to write action set to hw (drop)");
d902e1a737d44e Edward Cree 2022-09-26 552 goto release;
d902e1a737d44e Edward Cree 2022-09-26 553 }
d902e1a737d44e Edward Cree 2022-09-26 554 list_add_tail(&act->list, &rule->acts.list);
d902e1a737d44e Edward Cree 2022-09-26 555 act = NULL; /* end of the line */
d902e1a737d44e Edward Cree 2022-09-26 556 break;
d902e1a737d44e Edward Cree 2022-09-26 557 case FLOW_ACTION_REDIRECT:
d902e1a737d44e Edward Cree 2022-09-26 558 case FLOW_ACTION_MIRRED:
d902e1a737d44e Edward Cree 2022-09-26 559 save = *act;
83a187a4eb3a8d Edward Cree 2022-11-14 560
83a187a4eb3a8d Edward Cree 2022-11-14 561 if (!efx_tc_flower_action_order_ok(act, EFX_TC_AO_DELIVER)) {
83a187a4eb3a8d Edward Cree 2022-11-14 562 /* can't happen */
83a187a4eb3a8d Edward Cree 2022-11-14 563 rc = -EOPNOTSUPP;
83a187a4eb3a8d Edward Cree 2022-11-14 564 NL_SET_ERR_MSG_MOD(extack, "Deliver action violates action order (can't happen)");
83a187a4eb3a8d Edward Cree 2022-11-14 565 goto release;
83a187a4eb3a8d Edward Cree 2022-11-14 566 }
83a187a4eb3a8d Edward Cree 2022-11-14 567
d902e1a737d44e Edward Cree 2022-09-26 568 to_efv = efx_tc_flower_lookup_efv(efx, fa->dev);
d902e1a737d44e Edward Cree 2022-09-26 569 if (IS_ERR(to_efv)) {
ad1c80d5f777b8 Edward Cree 2022-10-18 570 NL_SET_ERR_MSG_MOD(extack, "Mirred egress device not on switch");
d902e1a737d44e Edward Cree 2022-09-26 571 rc = PTR_ERR(to_efv);
d902e1a737d44e Edward Cree 2022-09-26 572 goto release;
d902e1a737d44e Edward Cree 2022-09-26 573 }
d902e1a737d44e Edward Cree 2022-09-26 574 rc = efx_tc_flower_external_mport(efx, to_efv);
d902e1a737d44e Edward Cree 2022-09-26 575 if (rc < 0) {
ad1c80d5f777b8 Edward Cree 2022-10-18 576 NL_SET_ERR_MSG_MOD(extack, "Failed to identify egress m-port");
d902e1a737d44e Edward Cree 2022-09-26 577 goto release;
d902e1a737d44e Edward Cree 2022-09-26 578 }
d902e1a737d44e Edward Cree 2022-09-26 579 act->dest_mport = rc;
d902e1a737d44e Edward Cree 2022-09-26 580 act->deliver = 1;
d902e1a737d44e Edward Cree 2022-09-26 581 rc = efx_mae_alloc_action_set(efx, act);
d902e1a737d44e Edward Cree 2022-09-26 582 if (rc) {
ad1c80d5f777b8 Edward Cree 2022-10-18 583 NL_SET_ERR_MSG_MOD(extack, "Failed to write action set to hw (mirred)");
d902e1a737d44e Edward Cree 2022-09-26 584 goto release;
d902e1a737d44e Edward Cree 2022-09-26 585 }
d902e1a737d44e Edward Cree 2022-09-26 586 list_add_tail(&act->list, &rule->acts.list);
d902e1a737d44e Edward Cree 2022-09-26 587 act = NULL;
d902e1a737d44e Edward Cree 2022-09-26 588 if (fa->id == FLOW_ACTION_REDIRECT)
d902e1a737d44e Edward Cree 2022-09-26 589 break; /* end of the line */
d902e1a737d44e Edward Cree 2022-09-26 590 /* Mirror, so continue on with saved act */
2e0f1eb05692b4 Edward Cree 2022-11-14 591 save.count = NULL;
d902e1a737d44e Edward Cree 2022-09-26 592 act = kzalloc(sizeof(*act), GFP_USER);
d902e1a737d44e Edward Cree 2022-09-26 593 if (!act) {
d902e1a737d44e Edward Cree 2022-09-26 594 rc = -ENOMEM;
d902e1a737d44e Edward Cree 2022-09-26 595 goto release;
d902e1a737d44e Edward Cree 2022-09-26 596 }
d902e1a737d44e Edward Cree 2022-09-26 597 *act = save;
d902e1a737d44e Edward Cree 2022-09-26 598 break;
05ccd8d8a15e6b Edward Cree 2023-03-09 599 case FLOW_ACTION_VLAN_POP:
05ccd8d8a15e6b Edward Cree 2023-03-09 600 if (act->vlan_push) {
05ccd8d8a15e6b Edward Cree 2023-03-09 601 act->vlan_push--;
05ccd8d8a15e6b Edward Cree 2023-03-09 602 } else if (efx_tc_flower_action_order_ok(act, EFX_TC_AO_VLAN_POP)) {
05ccd8d8a15e6b Edward Cree 2023-03-09 603 act->vlan_pop++;
05ccd8d8a15e6b Edward Cree 2023-03-09 604 } else {
05ccd8d8a15e6b Edward Cree 2023-03-09 605 NL_SET_ERR_MSG_MOD(extack,
05ccd8d8a15e6b Edward Cree 2023-03-09 606 "More than two VLAN pops, or action order violated");
05ccd8d8a15e6b Edward Cree 2023-03-09 607 rc = -EINVAL;
05ccd8d8a15e6b Edward Cree 2023-03-09 608 goto release;
05ccd8d8a15e6b Edward Cree 2023-03-09 609 }
05ccd8d8a15e6b Edward Cree 2023-03-09 610 break;
05ccd8d8a15e6b Edward Cree 2023-03-09 611 case FLOW_ACTION_VLAN_PUSH:
05ccd8d8a15e6b Edward Cree 2023-03-09 612 if (!efx_tc_flower_action_order_ok(act, EFX_TC_AO_VLAN_PUSH)) {
05ccd8d8a15e6b Edward Cree 2023-03-09 613 rc = -EINVAL;
05ccd8d8a15e6b Edward Cree 2023-03-09 614 NL_SET_ERR_MSG_MOD(extack,
05ccd8d8a15e6b Edward Cree 2023-03-09 615 "More than two VLAN pushes, or action order violated");
05ccd8d8a15e6b Edward Cree 2023-03-09 616 goto release;
05ccd8d8a15e6b Edward Cree 2023-03-09 617 }
05ccd8d8a15e6b Edward Cree 2023-03-09 618 tci = fa->vlan.vid & VLAN_VID_MASK;
05ccd8d8a15e6b Edward Cree 2023-03-09 619 tci |= fa->vlan.prio << VLAN_PRIO_SHIFT;
05ccd8d8a15e6b Edward Cree 2023-03-09 620 act->vlan_tci[act->vlan_push] = cpu_to_be16(tci);
05ccd8d8a15e6b Edward Cree 2023-03-09 621 act->vlan_proto[act->vlan_push] = fa->vlan.proto;
05ccd8d8a15e6b Edward Cree 2023-03-09 622 act->vlan_push++;
05ccd8d8a15e6b Edward Cree 2023-03-09 623 break;
d902e1a737d44e Edward Cree 2022-09-26 624 default:
ad1c80d5f777b8 Edward Cree 2022-10-18 625 NL_SET_ERR_MSG_FMT_MOD(extack, "Unhandled action %u",
ad1c80d5f777b8 Edward Cree 2022-10-18 626 fa->id);
d902e1a737d44e Edward Cree 2022-09-26 627 rc = -EOPNOTSUPP;
d902e1a737d44e Edward Cree 2022-09-26 628 goto release;
d902e1a737d44e Edward Cree 2022-09-26 629 }
d902e1a737d44e Edward Cree 2022-09-26 630 }
d902e1a737d44e Edward Cree 2022-09-26 631
d902e1a737d44e Edward Cree 2022-09-26 632 if (act) {
d902e1a737d44e Edward Cree 2022-09-26 633 /* Not shot/redirected, so deliver to default dest */
d902e1a737d44e Edward Cree 2022-09-26 634 if (from_efv == EFX_EFV_PF)
d902e1a737d44e Edward Cree 2022-09-26 635 /* Rule applies to traffic from the wire,
d902e1a737d44e Edward Cree 2022-09-26 636 * and default dest is thus the PF
d902e1a737d44e Edward Cree 2022-09-26 637 */
d902e1a737d44e Edward Cree 2022-09-26 638 efx_mae_mport_uplink(efx, &act->dest_mport);
d902e1a737d44e Edward Cree 2022-09-26 639 else
d902e1a737d44e Edward Cree 2022-09-26 640 /* Representor, so rule applies to traffic from
d902e1a737d44e Edward Cree 2022-09-26 641 * representee, and default dest is thus the rep.
d902e1a737d44e Edward Cree 2022-09-26 642 * All reps use the same mport for delivery
d902e1a737d44e Edward Cree 2022-09-26 643 */
d902e1a737d44e Edward Cree 2022-09-26 644 efx_mae_mport_mport(efx, efx->tc->reps_mport_id,
d902e1a737d44e Edward Cree 2022-09-26 645 &act->dest_mport);
d902e1a737d44e Edward Cree 2022-09-26 646 act->deliver = 1;
d902e1a737d44e Edward Cree 2022-09-26 647 rc = efx_mae_alloc_action_set(efx, act);
d902e1a737d44e Edward Cree 2022-09-26 648 if (rc) {
ad1c80d5f777b8 Edward Cree 2022-10-18 649 NL_SET_ERR_MSG_MOD(extack, "Failed to write action set to hw (deliver)");
d902e1a737d44e Edward Cree 2022-09-26 650 goto release;
d902e1a737d44e Edward Cree 2022-09-26 651 }
d902e1a737d44e Edward Cree 2022-09-26 652 list_add_tail(&act->list, &rule->acts.list);
d902e1a737d44e Edward Cree 2022-09-26 653 act = NULL; /* Prevent double-free in error path */
d902e1a737d44e Edward Cree 2022-09-26 654 }
d902e1a737d44e Edward Cree 2022-09-26 655
d902e1a737d44e Edward Cree 2022-09-26 656 netif_dbg(efx, drv, efx->net_dev,
d902e1a737d44e Edward Cree 2022-09-26 657 "Successfully parsed filter (cookie %lx)\n",
d902e1a737d44e Edward Cree 2022-09-26 658 tc->cookie);
d902e1a737d44e Edward Cree 2022-09-26 659
d902e1a737d44e Edward Cree 2022-09-26 660 rule->match = match;
d902e1a737d44e Edward Cree 2022-09-26 661
d902e1a737d44e Edward Cree 2022-09-26 662 rc = efx_mae_alloc_action_set_list(efx, &rule->acts);
d902e1a737d44e Edward Cree 2022-09-26 663 if (rc) {
ad1c80d5f777b8 Edward Cree 2022-10-18 664 NL_SET_ERR_MSG_MOD(extack, "Failed to write action set list to hw");
d902e1a737d44e Edward Cree 2022-09-26 665 goto release;
d902e1a737d44e Edward Cree 2022-09-26 666 }
d902e1a737d44e Edward Cree 2022-09-26 667 rc = efx_mae_insert_rule(efx, &rule->match, EFX_TC_PRIO_TC,
d902e1a737d44e Edward Cree 2022-09-26 668 rule->acts.fw_id, &rule->fw_id);
d902e1a737d44e Edward Cree 2022-09-26 669 if (rc) {
ad1c80d5f777b8 Edward Cree 2022-10-18 670 NL_SET_ERR_MSG_MOD(extack, "Failed to insert rule in hw");
d902e1a737d44e Edward Cree 2022-09-26 671 goto release_acts;
d902e1a737d44e Edward Cree 2022-09-26 672 }
d902e1a737d44e Edward Cree 2022-09-26 673 return 0;
d902e1a737d44e Edward Cree 2022-09-26 674
d902e1a737d44e Edward Cree 2022-09-26 675 release_acts:
d902e1a737d44e Edward Cree 2022-09-26 676 efx_mae_free_action_set_list(efx, &rule->acts);
d902e1a737d44e Edward Cree 2022-09-26 677 release:
d902e1a737d44e Edward Cree 2022-09-26 678 /* We failed to insert the rule, so free up any entries we created in
d902e1a737d44e Edward Cree 2022-09-26 679 * subsidiary tables.
d902e1a737d44e Edward Cree 2022-09-26 680 */
d902e1a737d44e Edward Cree 2022-09-26 681 if (act)
d902e1a737d44e Edward Cree 2022-09-26 682 efx_tc_free_action_set(efx, act, false);
d902e1a737d44e Edward Cree 2022-09-26 683 if (rule) {
d902e1a737d44e Edward Cree 2022-09-26 684 rhashtable_remove_fast(&efx->tc->match_action_ht,
d902e1a737d44e Edward Cree 2022-09-26 685 &rule->linkage,
d902e1a737d44e Edward Cree 2022-09-26 686 efx_tc_match_action_ht_params);
d902e1a737d44e Edward Cree 2022-09-26 687 efx_tc_free_action_set_list(efx, &rule->acts, false);
d902e1a737d44e Edward Cree 2022-09-26 688 }
d902e1a737d44e Edward Cree 2022-09-26 689 kfree(rule);
d902e1a737d44e Edward Cree 2022-09-26 690 return rc;
d902e1a737d44e Edward Cree 2022-09-26 691 }
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki