From 1b8cc9fb6cac9d5882ab33b79f880d03d1859efb Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Mon, 15 Feb 2016 19:11:18 +0100 Subject: [PATCH] networkd: rework idle detection logic of networkd This patch makes networkd stay around as long as there is more than just a loopback interface around, or the loopback device isn't fully probed yet, or the loopback device has a .network file attached. In essence, this means networkd stays around now continously as it should, unless it is running in some (container?) environment that really has no interface except a loopback device. Fixes #2577. (cherry picked from commit 9dc907f9c93636cb63ca90300fa3b8c03812701f) --- src/network/networkd-manager.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c index b527191a5a..b8cb7f875d 100644 --- a/src/network/networkd-manager.c +++ b/src/network/networkd-manager.c @@ -1091,22 +1091,19 @@ static bool manager_check_idle(void *userdata) { assert(m); + /* Check whether we are idle now. The only case when we decide to be idle is when there's only a loopback + * device around, for which we have no configuration, and which already left the PENDING state. In all other + * cases we are not idle. */ + HASHMAP_FOREACH(link, m->links, i) { - /* we are not woken on udev activity, so let's just wait for the - * pending udev event */ + /* We are not woken on udev activity, so let's just wait for the pending udev event */ if (link->state == LINK_STATE_PENDING) return false; - if (!link->network) - continue; + if ((link->flags & IFF_LOOPBACK) == 0) + return false; - /* we are not woken on netork activity, so let's stay around */ - if (link_lldp_enabled(link) || - link_ipv4ll_enabled(link) || - link_dhcp4_server_enabled(link) || - link_dhcp4_enabled(link) || - link_dhcp6_enabled(link) || - link_ipv6_accept_ra_enabled(link)) + if (link->network) return false; }