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 7b6e4f8..44c0cd6 100644 (file)
--- 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 1e9be8a..55a56b7 100644 (file)
--- 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;