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/*
* 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/adj/adj_delegate.h>
#include <vnet/adj/adj.h>
#include <vnet/adj/adj_internal.h>
/*
* The per-type vector of virtual function tables
*/
static adj_delegate_vft_t *ad_vfts;
/**
* The value of the last dynamically allocated delegeate value
*/
static adj_delegate_type_t ad_max_id = ADJ_DELEGATE_BFD;
static adj_delegate_t *
adj_delegate_find_i (const ip_adjacency_t *adj,
adj_delegate_type_t type,
u32 *index)
{
adj_delegate_t **delegate;
int ii;
ii = 0;
vec_foreach(delegate, adj->ia_delegates)
{
if ((*delegate)->ad_type == type)
{
if (NULL != index)
*index = ii;
return (*delegate);
}
else
{
ii++;
}
}
return (NULL);
}
adj_delegate_t *
adj_delegate_get (const ip_adjacency_t *adj,
adj_delegate_type_t type)
{
return (adj_delegate_find_i(adj, type, NULL));
}
void
adj_delegate_remove (adj_index_t ai,
adj_delegate_type_t type)
{
ip_adjacency_t *adj;
adj_delegate_t *aed;
u32 index = ~0;
adj = adj_get(ai);
aed = adj_delegate_find_i(adj, type, &index);
ASSERT(NULL != aed);
vec_del1(adj->ia_delegates, index);
}
static int
adj_delegate_cmp_for_sort (void * v1,
void * v2)
{
adj_delegate_t **delegate1 = v1, **delegate2 = v2;
return ((*delegate1)->ad_type - (*delegate2)->ad_type);
}
static void
adj_delegate_init (ip_adjacency_t *adj,
adj_delegate_type_t adt,
adj_delegate_t *aed)
{
aed->ad_adj_index = adj_get_index(adj);
aed->ad_type = adt;
vec_add1(adj->ia_delegates, aed);
vec_sort_with_function(adj->ia_delegates,
adj_delegate_cmp_for_sort);
}
int
adj_delegate_add (ip_adjacency_t *adj,
adj_delegate_type_t adt,
adj_delegate_t *ad)
{
adj_delegate_t *delegate;
delegate = adj_delegate_get(adj, adt);
if (NULL == delegate)
{
adj_delegate_init(adj, adt, ad);
}
else
{
return (-1);
}
return (0);
}
void
adj_delegate_adj_deleted (ip_adjacency_t *adj)
{
adj_delegate_t **delegate;
vec_foreach(delegate, adj->ia_delegates)
{
if (ad_vfts[(*delegate)->ad_type].adv_adj_deleted)
{
ad_vfts[(*delegate)->ad_type].adv_adj_deleted(*delegate);
}
}
vec_reset_length(adj->ia_delegates);
}
u8*
adj_delegate_format (u8* s, ip_adjacency_t *adj)
{
adj_delegate_t **aed;
vec_foreach(aed, adj->ia_delegates)
{
if (ad_vfts[(*aed)->ad_type].adv_format)
{
s = format(s, "{");
s = ad_vfts[(*aed)->ad_type].adv_format(*aed, s);
s = format(s, "}");
}
else
{
s = format(s, "{unknown delegate}");
}
}
return (s);
}
/**
* adj_delegate_register_type
*
* Register the function table for a given type
*/
void
adj_delegate_register_type (adj_delegate_type_t type,
const adj_delegate_vft_t *vft)
{
/*
* assert that one only registration is made per-node type
*/
if (vec_len(ad_vfts) > type)
ASSERT(NULL == ad_vfts[type].adv_adj_deleted);
vec_validate(ad_vfts, type);
ad_vfts[type] = *vft;
}
/**
* adj_delegate_register_new_type
*
* Register the function table for a new type
*/
adj_delegate_type_t
adj_delegate_register_new_type (const adj_delegate_vft_t *vft)
{
adj_delegate_type_t type;
type = ++ad_max_id;
vec_validate(ad_vfts, type);
ad_vfts[type] = *vft;
return (type);
}
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