From: Igor Putovny <igor.putovny@nic.cz>
Date: Mon, 24 Feb 2025 15:56:53 +0000 (+0100)
Subject: Add more comments
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=27f6617f31031d193ceecb5aa1f6eaeab640916c;p=thirdparty%2Fbird.git

Add more comments
---

diff --git a/proto/aggregator/trie.c b/proto/aggregator/trie.c
index 230c0a94d..f3bcf6ae4 100644
--- a/proto/aggregator/trie.c
+++ b/proto/aggregator/trie.c
@@ -953,8 +953,9 @@ aggregator_update_prefix(struct aggregator_proto *p, struct aggregator_route *ol
   struct trie_node *node = updated_node;
 
   /*
-   * Find the closest IN_FIB ancestor of the updated node and
-   * deaggregate the whole subtree rooted at this node.
+   * Find the closest IN_FIB ancestor of the updated node and deaggregate
+   * the whole subtree rooted at this node. Since updated node has IN_FIB
+   * status, we need to find node which is different from this node.
    * Then aggregate it once again, this time with incorporated update.
    */
   while (1)
@@ -992,9 +993,10 @@ aggregator_withdraw_prefix(struct aggregator_proto *p, struct aggregator_route *
   struct trie_node *node = updated_node;
 
   /*
-   * Find the closest IN_FIB ancestor of the updated node and
-   * deaggregate the whole subtree rooted at this node.
-   * Then aggegate it once again, this time with received update.
+   * Find the closest IN_FIB ancestor of the updated node and deaggregate
+   * the whole subtree rooted at this node. Since updated node does not have
+   * IN_FIB status, the next node with this status will be its ancestor we are
+   * seeking. Then aggregate it again, this time with incorporated update.
    */
   while (1)
   {