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authorMohsin Kazmi <sykazmi@cisco.com>2018-04-05 14:43:43 +0200
committerDamjan Marion <dmarion.lists@gmail.com>2018-04-12 11:08:07 +0000
commit58c711a196d9b178bfe6190964a7df92145cf949 (patch)
tree8b74a2905be3ee2e452cf4eb3e591616f808c673
parent7fe930b73f28bb62c26a4bfbe3871d684c045706 (diff)
vom: Fix the itf stats replay
Change-Id: Iedc6bbaa1c0a1c3c6e1b8ed6d67db28046a551f4 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat
-rw-r--r--src/vpp-api/vom/interface.cpp16
-rw-r--r--src/vpp-api/vom/interface_cmds.cpp12
-rw-r--r--src/vpp-api/vom/interface_cmds.hpp12
3 files changed, 39 insertions, 1 deletions
diff --git a/src/vpp-api/vom/interface.cpp b/src/vpp-api/vom/interface.cpp
index 435002a1067..262d9eaf7b6 100644
--- a/src/vpp-api/vom/interface.cpp
+++ b/src/vpp-api/vom/interface.cpp
@@ -169,6 +169,10 @@ interface::sweep()
}
if (m_stats) {
+ if (stats_type_t::DETAILED == m_stats_type) {
+ HW::enqueue(new interface_cmds::collect_detail_stats_change_cmd(
+ m_stats_type, handle_i(), false));
+ }
HW::enqueue(new interface_cmds::stats_disable_cmd(m_hdl.data()));
m_stats.reset();
}
@@ -198,6 +202,18 @@ interface::replay()
HW::enqueue(new interface_cmds::state_change_cmd(m_state, m_hdl));
}
+ if (m_stats) {
+ if (stats_type_t::DETAILED == m_stats_type) {
+ m_stats_type.set(rc_t::NOOP);
+ HW::enqueue(new interface_cmds::collect_detail_stats_change_cmd(
+ m_stats_type, handle_i(), true));
+ }
+ stat_listener& listener = m_stats->listener();
+ listener.status().set(rc_t::NOOP);
+ m_stats.reset(new interface_cmds::stats_enable_cmd(listener, handle_i()));
+ HW::enqueue(m_stats);
+ }
+
if (m_table_id && (m_table_id.data() != route::DEFAULT_TABLE)) {
HW::enqueue(
new interface_cmds::set_table_cmd(m_table_id, l3_proto_t::IPV4, m_hdl));
diff --git a/src/vpp-api/vom/interface_cmds.cpp b/src/vpp-api/vom/interface_cmds.cpp
index b1decd2bf7c..49a24c1301b 100644
--- a/src/vpp-api/vom/interface_cmds.cpp
+++ b/src/vpp-api/vom/interface_cmds.cpp
@@ -582,6 +582,18 @@ stats_enable_cmd::retire(connection& con)
wait();
}
+interface::stat_listener&
+stats_enable_cmd::listener() const
+{
+ return m_listener;
+}
+
+void
+stats_enable_cmd::set(const rc_t& rc)
+{
+ m_listener.status().set(rc);
+}
+
void
stats_enable_cmd::notify()
{
diff --git a/src/vpp-api/vom/interface_cmds.hpp b/src/vpp-api/vom/interface_cmds.hpp
index 41ec5caf0e3..7a0040deb0a 100644
--- a/src/vpp-api/vom/interface_cmds.hpp
+++ b/src/vpp-api/vom/interface_cmds.hpp
@@ -484,6 +484,16 @@ public:
std::string to_string() const;
/**
+ * (re)set status
+ */
+ void set(const rc_t& rc);
+
+ /**
+ * get listener
+ */
+ interface::stat_listener& listener() const;
+
+ /**
* Comparison operator - only used for UT
*/
bool operator==(const stats_enable_cmd& i) const;
@@ -502,7 +512,7 @@ private:
/**
* The interface on which we are enabling states
*/
- handle_t m_swifindex;
+ const handle_t& m_swifindex;
};
/**
ef='#n294'>294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 
/*
 * Copyright (c) 2016 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <vlib/vlib.h>
#include <vnet/dpo/drop_dpo.h>

#include <vnet/mfib/mfib_table.h>
#include <vnet/mfib/ip4_mfib.h>
#include <vnet/mfib/ip6_mfib.h>
#include <vnet/mfib/mfib_entry.h>
#include <vnet/mfib/mfib_entry_src.h>
#include <vnet/mfib/mfib_entry_cover.h>
#include <vnet/mfib/mfib_signal.h>

mfib_table_t *
mfib_table_get (fib_node_index_t index,
                fib_protocol_t proto)
{
    switch (proto)
    {
    case FIB_PROTOCOL_IP4:
        return (pool_elt_at_index(ip4_main.mfibs, index));
    case FIB_PROTOCOL_IP6:
        return (pool_elt_at_index(ip6_main.mfibs, index));
    case FIB_PROTOCOL_MPLS:
        break;
    }
    ASSERT(0);
    return (NULL);
}

static inline fib_node_index_t
mfib_table_lookup_i (const mfib_table_t *mfib_table,
                     const mfib_prefix_t *prefix)
{
    switch (prefix->fp_proto)
    {
    case FIB_PROTOCOL_IP4:
        return (ip4_mfib_table_lookup(&mfib_table->v4,
                                      &prefix->fp_src_addr.ip4,
                                      &prefix->fp_grp_addr.ip4,
                                      prefix->fp_len));
    case FIB_PROTOCOL_IP6:
        return (ip6_mfib_table_lookup(&mfib_table->v6,
                                      &prefix->fp_src_addr.ip6,
                                      &prefix->fp_grp_addr.ip6,
                                      prefix->fp_len));
    case FIB_PROTOCOL_MPLS:
        break;
    }
    return (FIB_NODE_INDEX_INVALID);
}

fib_node_index_t
mfib_table_lookup (u32 fib_index,
                   const mfib_prefix_t *prefix)
{
    return (mfib_table_lookup_i(mfib_table_get(fib_index, prefix->fp_proto), prefix));
}

static inline fib_node_index_t
mfib_table_lookup_exact_match_i (const mfib_table_t *mfib_table,
                                 const mfib_prefix_t *prefix)
{
    switch (prefix->fp_proto)
    {
    case FIB_PROTOCOL_IP4:
        return (ip4_mfib_table_lookup_exact_match(&mfib_table->v4,
                                                  &prefix->fp_grp_addr.ip4,
                                                  &prefix->fp_src_addr.ip4,
                                                  prefix->fp_len));
    case FIB_PROTOCOL_IP6:
        return (ip6_mfib_table_lookup_exact_match(&mfib_table->v6,
                                                  &prefix->fp_grp_addr.ip6,
                                                  &prefix->fp_src_addr.ip6,
                                                  prefix->fp_len));
    case FIB_PROTOCOL_MPLS:
        break;
    }
    return (FIB_NODE_INDEX_INVALID);
}

fib_node_index_t
mfib_table_lookup_exact_match (u32 fib_index,
                              const mfib_prefix_t *prefix)
{
    return (mfib_table_lookup_exact_match_i(mfib_table_get(fib_index,
                                                          prefix->fp_proto),
                                            prefix));
}

static fib_node_index_t
mfib_table_get_less_specific_i (const mfib_table_t *mfib_table,
                                const mfib_prefix_t *prefix)
{
    switch (prefix->fp_proto)
    {
    case FIB_PROTOCOL_IP4:
        return (ip4_mfib_table_get_less_specific(&mfib_table->v4,
                                                 &prefix->fp_src_addr.ip4,
                                                 &prefix->fp_grp_addr.ip4,
                                                 prefix->fp_len));
    case FIB_PROTOCOL_IP6:
        return (ip6_mfib_table_get_less_specific(&mfib_table->v6,
                                                 &prefix->fp_src_addr.ip6,
                                                 &prefix->fp_grp_addr.ip6,
                                                 prefix->fp_len));
    case FIB_PROTOCOL_MPLS:
        break;
    }
    return (FIB_NODE_INDEX_INVALID);
}

fib_node_index_t
mfib_table_get_less_specific (u32 fib_index,
                              const mfib_prefix_t *prefix)
{
    return (mfib_table_get_less_specific_i(mfib_table_get(fib_index,
                                                          prefix->fp_proto),
                                           prefix));
}

static void
mfib_table_entry_remove (mfib_table_t *mfib_table,
                         const mfib_prefix_t *prefix,
                         fib_node_index_t mfib_entry_index)
{
    vlib_smp_unsafe_warning();

    mfib_table->mft_total_route_counts--;

    switch (prefix->fp_proto)
    {
    case FIB_PROTOCOL_IP4:
        ip4_mfib_table_entry_remove(&mfib_table->v4,
                                    &prefix->fp_grp_addr.ip4,
                                    &prefix->fp_src_addr.ip4,
                                    prefix->fp_len);
        break;
    case FIB_PROTOCOL_IP6:
        ip6_mfib_table_entry_remove(&mfib_table->v6,
                                    &prefix->fp_grp_addr.ip6,
                                    &prefix->fp_src_addr.ip6,
                                    prefix->fp_len);
        break;
    case FIB_PROTOCOL_MPLS:
        ASSERT(0);
        break;
    }

    mfib_entry_cover_change_notify(mfib_entry_index,
                                   FIB_NODE_INDEX_INVALID);
    mfib_entry_unlock(mfib_entry_index);
}

static void
mfib_table_post_insert_actions (mfib_table_t *mfib_table,
                                const mfib_prefix_t *prefix,
                                fib_node_index_t mfib_entry_index)
{
    fib_node_index_t mfib_entry_cover_index;

    /*
     * find  the covering entry
     */
    mfib_entry_cover_index = mfib_table_get_less_specific_i(mfib_table,
                                                            prefix);
    /*
     * the indicies are the same when the default route is first added
     */
    if (mfib_entry_cover_index != mfib_entry_index)
    {
        /*
         * inform the covering entry that a new more specific
         * has been inserted beneath it.
         * If the prefix that has been inserted is a host route
         * then it is not possible that it will be the cover for any
         * other entry, so we can elide the walk.
         */
        if (!mfib_entry_is_host(mfib_entry_index))
        {
            mfib_entry_cover_change_notify(mfib_entry_cover_index,
                                           mfib_entry_index);
        }
    }
}


static void
mfib_table_entry_insert (mfib_table_t *mfib_table,
                         const mfib_prefix_t *prefix,
                         fib_node_index_t mfib_entry_index)
{
    vlib_smp_unsafe_warning();

    mfib_entry_lock(mfib_entry_index);
    mfib_table->mft_total_route_counts++;

    switch (prefix->fp_proto)
    {
    case FIB_PROTOCOL_IP4:
        ip4_mfib_table_entry_insert(&mfib_table->v4,
                                    &prefix->fp_grp_addr.ip4,
                                    &prefix->fp_src_addr.ip4,
                                    prefix->fp_len,
                                    mfib_entry_index);
        break;
    case FIB_PROTOCOL_IP6:
        ip6_mfib_table_entry_insert(&mfib_table->v6,
                                    &prefix->fp_grp_addr.ip6,
                                    &prefix->fp_src_addr.ip6,
                                    prefix->fp_len,
                                    mfib_entry_index);
        break;
    case FIB_PROTOCOL_MPLS:
        break;
    }

    mfib_table_post_insert_actions(mfib_table, prefix, mfib_entry_index);
}

fib_node_index_t
mfib_table_entry_update (u32 fib_index,
                         const mfib_prefix_t *prefix,
                         mfib_source_t source,
                         fib_rpf_id_t rpf_id,
                         mfib_entry_flags_t entry_flags)
{
    fib_node_index_t mfib_entry_index;
    mfib_table_t *mfib_table;

    mfib_table = mfib_table_get(fib_index, prefix->fp_proto);
    mfib_entry_index = mfib_table_lookup_exact_match_i(mfib_table, prefix);

    if (FIB_NODE_INDEX_INVALID == mfib_entry_index)
    {
        if (MFIB_ENTRY_FLAG_NONE != entry_flags)
        {
            /*
             * update to a non-existing entry with non-zero flags
             */
            mfib_entry_index = mfib_entry_create(fib_index, source,
                                                 prefix, rpf_id,
                                                 entry_flags,
                                                 INDEX_INVALID);

            mfib_table_entry_insert(mfib_table, prefix, mfib_entry_index);
        }
        /*
         * else
         *   the entry doesn't exist and the request is to set no flags
         *   the result would be an entry that doesn't exist - so do nothing
         */
    }
    else
    {
        mfib_entry_lock(mfib_entry_index);

        if (mfib_entry_update(mfib_entry_index,
                              source,
                              entry_flags,
                              rpf_id,
                              INDEX_INVALID))
        {
            /*
             * this update means we can now remove the entry.
             */
            mfib_table_entry_remove(mfib_table, prefix, mfib_entry_index);
        }

        mfib_entry_unlock(mfib_entry_index);
    }

    return (mfib_entry_index);
}

static fib_node_index_t
mfib_table_entry_paths_update_i (u32 fib_index,
                                 const mfib_prefix_t *prefix,
                                 mfib_source_t source,
                                 const fib_route_path_t *rpaths)
{
    fib_node_index_t mfib_entry_index;
    mfib_table_t *mfib_table;

    mfib_table = mfib_table_get(fib_index, prefix->fp_proto);
    mfib_entry_index = mfib_table_lookup_exact_match_i(mfib_table, prefix);

    if (FIB_NODE_INDEX_INVALID == mfib_entry_index)
    {
        mfib_entry_index = mfib_entry_create(fib_index,
                                             source,
                                             prefix,
                                             MFIB_RPF_ID_NONE,
                                             MFIB_ENTRY_FLAG_NONE,
                                             INDEX_INVALID);

        mfib_entry_path_update(mfib_entry_index, source, rpaths);

        mfib_table_entry_insert(mfib_table, prefix, mfib_entry_index);
    }
    else
    {
        mfib_entry_path_update(mfib_entry_index, source, rpaths);
    }
    return (mfib_entry_index);
}


fib_node_index_t
mfib_table_entry_path_update (u32 fib_index,
                              const mfib_prefix_t *prefix,
                              mfib_source_t source,
                              const fib_route_path_t *rpath)
{
    fib_node_index_t mfib_entry_index;
    fib_route_path_t *rpaths = NULL;

    vec_add1(rpaths, *rpath);

    mfib_entry_index = mfib_table_entry_paths_update_i(fib_index, prefix,
                                                       source, rpaths);

    vec_free(rpaths);
    return (mfib_entry_index);
}

fib_node_index_t
mfib_table_entry_paths_update (u32 fib_index,
                              const mfib_prefix_t *prefix,
                              mfib_source_t source,
                              const fib_route_path_t *rpaths)
{
    return (mfib_table_entry_paths_update_i(fib_index, prefix,
                                            source, rpaths));
}

static void
mfib_table_entry_paths_remove_i (u32 fib_index,
                                 const mfib_prefix_t *prefix,
                                 mfib_source_t source,
                                 const fib_route_path_t *rpaths)
{
    fib_node_index_t mfib_entry_index;
    mfib_table_t *mfib_table;

    mfib_table = mfib_table_get(fib_index, prefix->fp_proto);
    mfib_entry_index = mfib_table_lookup_exact_match_i(mfib_table, prefix);

    if (FIB_NODE_INDEX_INVALID == mfib_entry_index)
    {
        /*
         * removing an entry that does not exist. i'll allow it.
         */
    }
    else
    {
        int no_more_sources;

        /*
         * don't nobody go nowhere
         */
        mfib_entry_lock(mfib_entry_index);

        no_more_sources = mfib_entry_path_remove(mfib_entry_index,
                                                 source,
                                                 rpaths);

        if (no_more_sources)
        {
            /*
             * last source gone. remove from the table
             */
            mfib_table_entry_remove(mfib_table, prefix, mfib_entry_index);
        }

        mfib_entry_unlock(mfib_entry_index);
    }
}
void
mfib_table_entry_paths_remove (u32 fib_index,
                              const mfib_prefix_t *prefix,
                              mfib_source_t source,
                              const fib_route_path_t *rpaths)
{
    mfib_table_entry_paths_remove_i(fib_index,
                                    prefix,
                                    source,
                                    rpaths);
}

void
mfib_table_entry_path_remove (u32 fib_index,
                              const mfib_prefix_t *prefix,
                              mfib_source_t source,
                              const fib_route_path_t *rpath)
{
    fib_route_path_t *rpaths = NULL;

    vec_add1(rpaths, *rpath);

    mfib_table_entry_paths_remove_i(fib_index,
                                    prefix,
                                    source,
                                    rpaths);

    vec_free(rpaths);
}

fib_node_index_t
mfib_table_entry_special_add (u32 fib_index,
                              const mfib_prefix_t *prefix,
                              mfib_source_t source,
                              mfib_entry_flags_t entry_flags,
                              index_t repi)
{
    fib_node_index_t mfib_entry_index;
    mfib_table_t *mfib_table;

    mfib_table = mfib_table_get(fib_index, prefix->fp_proto);
    mfib_entry_index = mfib_table_lookup_exact_match_i(mfib_table, prefix);

    if (INDEX_INVALID != repi)
    {
        entry_flags |= MFIB_ENTRY_FLAG_EXCLUSIVE;
    }

    if (FIB_NODE_INDEX_INVALID == mfib_entry_index)
    {
        mfib_entry_index = mfib_entry_create(fib_index,
                                             source,
                                             prefix,
                                             MFIB_RPF_ID_NONE,
                                             entry_flags,
                                             repi);

        mfib_table_entry_insert(mfib_table, prefix, mfib_entry_index);
    }
    else
    {
        mfib_entry_special_add(mfib_entry_index, source, entry_flags,
                               MFIB_RPF_ID_NONE, repi);
    }

    return (mfib_entry_index);
}

static void
mfib_table_entry_delete_i (u32 fib_index,
                           fib_node_index_t mfib_entry_index,
                           const mfib_prefix_t *prefix,
                           mfib_source_t source)
{
    mfib_table_t *mfib_table;

    mfib_table = mfib_table_get(fib_index, prefix->fp_proto);

    /*
     * don't nobody go nowhere
     */
    mfib_entry_lock(mfib_entry_index);

    if (mfib_entry_delete(mfib_entry_index, source))
    {
        /*
         * last source gone. remove from the table
         */
        mfib_table_entry_remove(mfib_table, prefix, mfib_entry_index);
    }
    /*
     * else
     *   still has sources, leave it be.
     */

    mfib_entry_unlock(mfib_entry_index);
}

void
mfib_table_entry_delete (u32 fib_index,
                         const mfib_prefix_t *prefix,
                         mfib_source_t source)
{
    fib_node_index_t mfib_entry_index;

    mfib_entry_index = mfib_table_lookup_exact_match(fib_index, prefix);

    if (FIB_NODE_INDEX_INVALID == mfib_entry_index)
    {
        /*
         * removing an etry that does not exist.
         * i'll allow it, but i won't like it.
         */
        clib_warning("%U not in FIB", format_mfib_prefix, prefix);
    }
    else
    {
        mfib_table_entry_delete_i(fib_index, mfib_entry_index,
                                  prefix, source);
    }
}

void
mfib_table_entry_delete_index (fib_node_index_t mfib_entry_index,
                               mfib_source_t source)
{
    mfib_table_entry_delete_i(mfib_entry_get_fib_index(mfib_entry_index),
                              mfib_entry_index,
                              mfib_entry_get_prefix(mfib_entry_index),
                              source);
}

u32
mfib_table_get_index_for_sw_if_index (fib_protocol_t proto,
                                      u32 sw_if_index)
{
    switch (proto)
    {
    case FIB_PROTOCOL_IP4:
        return (ip4_mfib_table_get_index_for_sw_if_index(sw_if_index));
    case FIB_PROTOCOL_IP6:
        return (ip6_mfib_table_get_index_for_sw_if_index(sw_if_index));
    case FIB_PROTOCOL_MPLS:
        ASSERT(0);
        break;
    }
    return (~0);
}

u32
mfib_table_get_table_id (u32 fib_index,
                        fib_protocol_t proto)
{
    mfib_table_t *mfib_table;

    mfib_table = mfib_table_get(fib_index, proto);

    return ((NULL != mfib_table ? mfib_table->mft_table_id : ~0));
}

u32
mfib_table_find (fib_protocol_t proto,
                 u32 table_id)
{
    switch (proto)
    {
    case FIB_PROTOCOL_IP4:
        return (ip4_mfib_index_from_table_id(table_id));
    case FIB_PROTOCOL_IP6:
        return (ip6_mfib_index_from_table_id(table_id));
    case FIB_PROTOCOL_MPLS:
        ASSERT(0);
        break;
    }
    return (~0);
}

static u32
mfib_table_find_or_create_and_lock_i (fib_protocol_t proto,
                                      u32 table_id,
                                      mfib_source_t src,
                                      const u8 *name)
{
    mfib_table_t *mfib_table;
    fib_node_index_t fi;

    switch (proto)
    {
    case FIB_PROTOCOL_IP4:
        fi = ip4_mfib_table_find_or_create_and_lock(table_id, src);
        break;
    case FIB_PROTOCOL_IP6:
        fi = ip6_mfib_table_find_or_create_and_lock(table_id, src);
        break;
    case FIB_PROTOCOL_MPLS:
    default:
        return (~0);
    }

    mfib_table = mfib_table_get(fi, proto);

    if (NULL == mfib_table->mft_desc)
    {
        if (name && name[0])
        {
            mfib_table->mft_desc = format(NULL, "%s", name);
        }
        else
        {
            mfib_table->mft_desc = format(NULL, "%U-VRF:%d",
                                          format_fib_protocol, proto,
                                          table_id);
        }
    }

    return (fi);
}

u32
mfib_table_find_or_create_and_lock (fib_protocol_t proto,
                                    u32 table_id,
                                    mfib_source_t src)
{
    return (mfib_table_find_or_create_and_lock_i(proto, table_id,
                                                 src, NULL));
}

u32
mfib_table_find_or_create_and_lock_w_name (fib_protocol_t proto,
                                           u32 table_id,
                                           mfib_source_t src,
                                           const u8 *name)
{
    return (mfib_table_find_or_create_and_lock_i(proto, table_id,
                                                 src, name));
}

/**
 * @brief Table flush context. Store the indicies of matching FIB entries
 * that need to be removed.
 */
typedef struct mfib_table_flush_ctx_t_
{
    /**
     * The list of entries to flush
     */
    fib_node_index_t *mftf_entries;

    /**
     * The source we are flushing
     */
    mfib_source_t mftf_source;
} mfib_table_flush_ctx_t;

static int
mfib_table_flush_cb (fib_node_index_t mfib_entry_index,
                     void *arg)
{
    mfib_table_flush_ctx_t *ctx = arg;

    if (mfib_entry_is_sourced(mfib_entry_index, ctx->mftf_source))
    {
        vec_add1(ctx->mftf_entries, mfib_entry_index);
    }
    return (1);
}

void
mfib_table_flush (u32 mfib_index,
                  fib_protocol_t proto,
                  mfib_source_t source)
{
    fib_node_index_t *mfib_entry_index;
    mfib_table_flush_ctx_t ctx = {
        .mftf_entries = NULL,
        .mftf_source = source,
    };

    mfib_table_walk(mfib_index, proto,
                    mfib_table_flush_cb,
                    &ctx);

    vec_foreach(mfib_entry_index, ctx.mftf_entries)
    {
        mfib_table_entry_delete_index(*mfib_entry_index, source);
    }

    vec_free(ctx.mftf_entries);
}

static void
mfib_table_destroy (mfib_table_t *mfib_table)
{
    vec_free(mfib_table->mft_desc);

    switch (mfib_table->mft_proto)
    {
    case FIB_PROTOCOL_IP4:
        ip4_mfib_table_destroy(&mfib_table->v4);
        break;
    case FIB_PROTOCOL_IP6:
        ip6_mfib_table_destroy(&mfib_table->v6);
        break;
    case FIB_PROTOCOL_MPLS:
        ASSERT(0);
        break;
    }
}

void
mfib_table_unlock (u32 fib_index,
                   fib_protocol_t proto,
                   mfib_source_t source)
{
    mfib_table_t *mfib_table;

    mfib_table = mfib_table_get(fib_index, proto);
    mfib_table->mft_locks[source]--;
    mfib_table->mft_locks[MFIB_TABLE_TOTAL_LOCKS]--;

    if (0 == mfib_table->mft_locks[source])
    {
        /*
         * The source no longer needs the table. flush any routes
         * from it just in case
         */
        mfib_table_flush(fib_index, proto, source);
    }

    if (0 == mfib_table->mft_locks[MFIB_TABLE_TOTAL_LOCKS])
    {
        /*
         * no more locak from any source - kill it
         */
	mfib_table_destroy(mfib_table);
    }
}

void
mfib_table_lock (u32 fib_index,
                 fib_protocol_t proto,
                 mfib_source_t source)
{
    mfib_table_t *mfib_table;

    mfib_table = mfib_table_get(fib_index, proto);
    mfib_table->mft_locks[source]++;
    mfib_table->mft_locks[MFIB_TABLE_TOTAL_LOCKS]++;
}

u32
mfib_table_get_n_routes (fib_node_index_t fib_index,
                         fib_protocol_t proto)
{
    mfib_table_t *mfib_table;

    mfib_table = mfib_table_get(fib_index, proto);

    return (mfib_table->mft_total_route_counts);
}

void
mfib_table_walk (u32 fib_index,
                 fib_protocol_t proto,
                 mfib_table_walk_fn_t fn,
                 void *ctx)
{
    switch (proto)
    {
    case FIB_PROTOCOL_IP4:
	ip4_mfib_table_walk(ip4_mfib_get(fib_index), fn, ctx);
	break;
    case FIB_PROTOCOL_IP6:
	ip6_mfib_table_walk(ip6_mfib_get(fib_index), fn, ctx);
	break;
    case FIB_PROTOCOL_MPLS:
	break;
    }
}

u8*
format_mfib_table_name (u8* s, va_list *ap)
{
    fib_node_index_t fib_index = va_arg(*ap, fib_node_index_t);
    fib_protocol_t proto = va_arg(*ap, int); // int promotion
    mfib_table_t *mfib_table;

    mfib_table = mfib_table_get(fib_index, proto);

    s = format(s, "%v", mfib_table->mft_desc);

    return (s);
}

u8 *
format_mfib_table_memory (u8 *s, va_list *args)
{
    s = format(s, "%U", format_ip4_mfib_table_memory);
    s = format(s, "%U", format_ip6_mfib_table_memory);

    return (s);
}

static clib_error_t *
mfib_module_init (vlib_main_t * vm)
{
    clib_error_t * error;

    mfib_entry_src_module_init();
    mfib_entry_module_init();
    mfib_signal_module_init();

    if ((error = vlib_call_init_function (vm, fib_module_init)))
        return (error);
    if ((error = vlib_call_init_function (vm, rn_module_init)))
        return (error);

    return (error);
}

VLIB_INIT_FUNCTION(mfib_module_init);