From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 13 Feb 2017 19:41:09 +0000 (+0100)
Subject: resolved: count the number of addresses per link
X-Git-Tag: v233~98^2~4
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=bceaa99d49538fc24151abed9f9d40c950f626a2;p=thirdparty%2Fsystemd.git

resolved: count the number of addresses per link

This becomes handy later on. Moreover, we keep track of similar counters
for other objects like this too, hence adding this here too is obvious.
---

diff --git a/src/resolve/resolved-link.c b/src/resolve/resolved-link.c
index 7b6e4f8398c..44c0cd654f4 100644
--- a/src/resolve/resolved-link.c
+++ b/src/resolve/resolved-link.c
@@ -669,6 +669,7 @@ int link_address_new(Link *l, LinkAddress **ret, int family, const union in_addr
 
         a->link = l;
         LIST_PREPEND(addresses, l->addresses, a);
+        l->n_addresses++;
 
         if (ret)
                 *ret = a;
@@ -683,6 +684,9 @@ LinkAddress *link_address_free(LinkAddress *a) {
         if (a->link) {
                 LIST_REMOVE(addresses, a->link->addresses, a);
 
+                assert(a->link->n_addresses > 0);
+                a->link->n_addresses--;
+
                 if (a->llmnr_address_rr) {
                         if (a->family == AF_INET && a->link->llmnr_ipv4_scope)
                                 dns_zone_remove_rr(&a->link->llmnr_ipv4_scope->zone, a->llmnr_address_rr);
diff --git a/src/resolve/resolved-link.h b/src/resolve/resolved-link.h
index 1e9be8ae84d..55a56b79067 100644
--- a/src/resolve/resolved-link.h
+++ b/src/resolve/resolved-link.h
@@ -60,6 +60,7 @@ struct Link {
         unsigned flags;
 
         LIST_HEAD(LinkAddress, addresses);
+        unsigned n_addresses;
 
         LIST_HEAD(DnsServer, dns_servers);
         DnsServer *current_dns_server;