resolved: prorize rtnl and sd-network event sources

Lets make sure we always take notice of network changes before answering client requests.

This way, calls like SetLinkDNS() become race-free as the specified interface index is guarantee to have been processed
if it exists before we make changes to it.

diff --git a/src/resolve/resolved-manager.c b/src/resolve/resolved-manager.c
index 704f012c379b1521bdbd5b35ead572db9578ba10..4306403834955fc7b647738e3948b9336fab1eb0 100644 (file)
--- a/src/resolve/resolved-manager.c
+++ b/src/resolve/resolved-manager.c
@@ -206,7 +206,7 @@ static int manager_rtnl_listen(Manager *m) {
         if (r < 0)
                 return r;
 
-        r = sd_netlink_attach_event(m->rtnl, m->event, 0);
+        r = sd_netlink_attach_event(m->rtnl, m->event, SD_EVENT_PRIORITY_IMPORTANT);
         if (r < 0)
                 return r;
 
@@ -314,6 +314,10 @@ static int manager_network_monitor_listen(Manager *m) {
         if (r < 0)
                 return r;
 
+        r = sd_event_source_set_priority(m->network_event_source, SD_EVENT_PRIORITY_IMPORTANT+5);
+        if (r < 0)
+                return r;
+
         (void) sd_event_source_set_description(m->network_event_source, "network-monitor");
 
         return 0;