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authorMichal Cmarada <mcmarada@cisco.com>2019-05-03 12:58:55 +0200
committerOle Trøan <otroan@employees.org>2019-05-16 13:20:52 +0000
commitc1f93067ed4b9954bbba82e2c9c104b22e2f7f33 (patch)
treec85414e6a64e4122c4e99c7d764090149c149b34 /src/vnet/policer
parentcefb5ad3d4e6d4d221eb4348e0c27baba3a2c2f1 (diff)
Add default value for API Nat flags
Change-Id: I4f1b83ae1c746b8f67f2d12a02081702b9553b44 Signed-off-by: Michal Cmarada <mcmarada@cisco.com>
Diffstat (limited to 'src/vnet/policer')
0 files changed, 0 insertions, 0 deletions
id='n133' href='#n133'>133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 
/*
 * 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 <vnet/mfib/mfib_entry_cover.h>
#include <vnet/mfib/mfib_entry_src.h>
#include <vnet/fib/fib_node_list.h>

u32
mfib_entry_cover_track (mfib_entry_t* cover,
		       fib_node_index_t covered)
{
    mfib_entry_delegate_t *mfed;

    MFIB_ENTRY_DBG(cover, "cover-track %d", covered);

    ASSERT(mfib_entry_get_index(cover) != covered);

    mfed = mfib_entry_delegate_get(cover, MFIB_ENTRY_DELEGATE_COVERED);

    if (NULL == mfed)
    {
        mfed = mfib_entry_delegate_find_or_add(cover, MFIB_ENTRY_DELEGATE_COVERED);
        mfed->mfd_list = fib_node_list_create();
    }

    return (fib_node_list_push_front(mfed->mfd_list,
                                     0, FIB_NODE_TYPE_MFIB_ENTRY,
                                     covered));
}

void
mfib_entry_cover_untrack (mfib_entry_t* cover,
			 u32 tracked_index)
{
    mfib_entry_delegate_t *mfed;

    MFIB_ENTRY_DBG(cover, "cover-untrack @ %d", tracked_index);

    mfed = mfib_entry_delegate_get(cover, MFIB_ENTRY_DELEGATE_COVERED);

    if (NULL == mfed)
        return;

    fib_node_list_remove(mfed->mfd_list, tracked_index);

    if (0 == fib_node_list_get_size(mfed->mfd_list))
    {
        fib_node_list_destroy(&mfed->mfd_list);
        mfib_entry_delegate_remove(cover, MFIB_ENTRY_DELEGATE_COVERED);        
    }
}

/**
 * Internal struct to hold user supplied paraneters for the cover walk
 */
typedef struct mfib_enty_cover_walk_ctx_t_ {
    mfib_entry_t *cover;
    mfib_entry_covered_walk_t walk;
    void *ctx;
} mfib_enty_cover_walk_ctx_t;

static int
mfib_entry_cover_walk_node_ptr (fib_node_ptr_t *depend,
                                void *args)
{
    mfib_enty_cover_walk_ctx_t *ctx = args;

    ctx->walk(ctx->cover, depend->fnp_index, ctx->ctx);

    /* continue */
    return (1);
}

void
mfib_entry_cover_walk (mfib_entry_t *cover,
		      mfib_entry_covered_walk_t walk,
		      void *args)
{
    mfib_entry_delegate_t *mfed;

    mfed = mfib_entry_delegate_get(cover, MFIB_ENTRY_DELEGATE_COVERED);

    if (NULL == mfed)
        return;

    mfib_enty_cover_walk_ctx_t ctx = {
        .cover = cover,
        .walk = walk,
        .ctx = args,
    };

    fib_node_list_walk(mfed->mfd_list,
                       mfib_entry_cover_walk_node_ptr,
                       &ctx);
}

static int
mfib_entry_cover_change_one (mfib_entry_t *cover,
			    fib_node_index_t covered,
			    void *args)
{
    fib_node_index_t new_cover;

    /*
     * The 3 entries involved here are:
     *   cover - the least specific. It will cover both the others
     *  new_cover - the enty just inserted below the cover
     *  covered - the entry that was tracking the cover.
     *
     * The checks below are to determine if new_cover is a cover for covered.
     */
    new_cover = pointer_to_uword(args);

    if (FIB_NODE_INDEX_INVALID == new_cover)
    {
	/*
	 * nothing has been inserted, which implies the cover was removed.
	 * 'cover' is thus the new cover.
	 */
	mfib_entry_cover_changed(covered);
    }
    else if (new_cover != covered)
    {
	const mfib_prefix_t *pfx_covered, *pfx_new_cover;

	pfx_covered = mfib_entry_get_prefix(covered);
	pfx_new_cover = mfib_entry_get_prefix(new_cover);

	if (mfib_prefix_is_cover(pfx_new_cover, pfx_covered))
	{
	    mfib_entry_cover_changed(covered);
	}
    }
    /* continue */
    return (1);
}

void
mfib_entry_cover_change_notify (fib_node_index_t cover_index,
                                fib_node_index_t covered)
{
    mfib_entry_t *cover;

    cover = mfib_entry_get(cover_index);

    mfib_entry_cover_walk(cover, 
                          mfib_entry_cover_change_one,
                          uword_to_pointer(covered, void*));
}

static int
mfib_entry_cover_update_one (mfib_entry_t *cover,
			    fib_node_index_t covered,
			    void *args)
{
    mfib_entry_cover_updated(covered);

    /* continue */
    return (1);
}

void
mfib_entry_cover_update_notify (mfib_entry_t *mfib_entry)
{
    mfib_entry_cover_walk(mfib_entry, 
			 mfib_entry_cover_update_one,
			 NULL);
}