Nest: Fix race condition during reconfiguration

If export filter is changed during reconfiguration and a route disappears
between reconfiguration and refeed (e.g., if the route is a static route
also removed during the reconfiguration), the route is not withdrawn.
The patch fixes that by adding tx reconfiguration timestamp.

1 files changed, 4 insertions, 0 deletions

diff --git a/nest/proto.c b/nest/proto.c
index 49f71304..8a8221a8 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -165,6 +165,7 @@ proto_add_channel(struct proto *p, struct channel_config *cf)
   c->channel_state = CS_DOWN;
   c->export_state = ES_DOWN;
   c->last_state_change = current_time();
+  c->last_tx_filter_change = current_time();
   c->reloadable = 1;
 
   CALL(c->channel->init, c, cf);
@@ -557,6 +558,9 @@ channel_reconfigure(struct channel *c, struct channel_config *cf)
 
   channel_verify_limits(c);
 
+  if (export_changed)
+    c->last_tx_filter_change = current_time();
+
   /* Execute channel-specific reconfigure hook */
   if (c->channel->reconfigure && !c->channel->reconfigure(c, cf))
     return 0;