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This commit is contained in:
Igor Putovny 2023-10-18 12:12:27 +02:00
parent 4352095801
commit ef6a526588
1 changed files with 12 additions and 8 deletions
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20
proto/aggregator/aggregator.c
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@ -133,7 +133,7 @@ delete_trie(struct trie_node *node)
}
/*
* Insert prefix in @addr to prefix trie with root at @node
* Insert prefix in @addr to prefix trie with beginning at @root and assign @bucket to this prefix
*/
static void
trie_insert_prefix(const union net_addr_union *addr, struct trie_node * const root, struct aggregator_bucket *bucket, slab *trie_slab)
@ -166,9 +166,13 @@ trie_insert_prefix(const union net_addr_union *addr, struct trie_node * const ro
node = node->child[bit];
}
/* Assign bucket to the last node */
node->bucket = bucket;
}
/*
* Return first non-null bucket of the closest ancestor of @node
*/
static struct aggregator_bucket *
get_ancestor_bucket(const struct trie_node *node)
{
@ -191,7 +195,6 @@ get_ancestor_bucket(const struct trie_node *node)
static void
first_pass(struct trie_node *node, slab *trie_slab)
{
bug("first pass");
assert(node != NULL);
assert(trie_slab != NULL);
@ -202,7 +205,7 @@ first_pass(struct trie_node *node, slab *trie_slab)
return;
}
/* Add leaves so that each node has either two or no children */
/* Add leave nodes so that each node has either two or no children */
for (int i = 0; i < 2; i++)
{
if (!node->child[i])
@ -243,6 +246,7 @@ aggregator_bucket_compare(const void *a, const void *b)
const struct aggregator_bucket *fst = *(struct aggregator_bucket **)a;
const struct aggregator_bucket *snd = *(struct aggregator_bucket **)b;
/* There is linear ordering on pointers */
if (fst < snd)
return -1;
@ -309,8 +313,8 @@ aggregator_bucket_unionize(const struct trie_node *left, const struct trie_node
{
case 0:
/*
* If there is no element yet or if the last and new element are not equal
* (that means elements do not repeat), insert new element to the set.
* If there is no element yet or if the last and new elements are not equal
* (which means elements do not repeat), insert new element to the set.
*/
if (node->potential_buckets_count == 0 || node->potential_buckets[node->potential_buckets_count - 1] != left->potential_buckets[i])
node->potential_buckets[node->potential_buckets_count++] = left->potential_buckets[i];
@ -427,7 +431,7 @@ second_pass(struct trie_node *node)
}
/*
* Check if @bucket is one of potential nexthop buckets in @node
* Check if @bucket is one of potential buckets in @node
*/
static int
is_bucket_potential(const struct trie_node *node, const struct aggregator_bucket *bucket)
@ -468,8 +472,8 @@ third_pass(struct trie_node *node)
const struct aggregator_bucket *inherited_bucket = get_ancestor_bucket(node);
/*
* If bucket inherited from ancestor is among potential bucket for this node,
* this node doesn't need bucket because it inherits one
* If bucket inherited from ancestor is one of potential buckets for this node,
* then this node doesn't need bucket because it inherits one.
*/
if (is_bucket_potential(node, inherited_bucket))
{