Implements ADD-PATH extension for BGP.

Allows to send and receive multiple routes for one network by one BGP
session. Also contains necessary core changes to support this (routing
tables accepting several routes for one network from one protocol).
It needs some more cleanup before merging to the master branch.

1 files changed, 13 insertions, 0 deletions

diff --git a/nest/proto.c b/nest/proto.c
index 53d3f1a2..399c02e3 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -219,6 +219,7 @@ proto_free_ahooks(struct proto *p)
   p->main_ahook = NULL;
 }
 
+
 /**
  * proto_config_new - create a new protocol configuration
  * @pr: protocol the configuration will belong to
@@ -791,11 +792,15 @@ proto_schedule_feed(struct proto *p, int initial)
   /* Connect protocol to routing table */
   if (initial && !p->proto->multitable)
     {
+      p->main_source = rt_get_source(p, 0);
+      rt_lock_source(p->main_source);
+
       p->main_ahook = proto_add_announce_hook(p, p->table, &p->stats);
       p->main_ahook->in_filter = p->cf->in_filter;
       p->main_ahook->out_filter = p->cf->out_filter;
       p->main_ahook->in_limit = p->cf->in_limit;
       p->main_ahook->out_limit = p->cf->out_limit;
+
       proto_reset_limit(p->main_ahook->in_limit);
       proto_reset_limit(p->main_ahook->out_limit);
     }
@@ -844,6 +849,8 @@ proto_flush_loop(void *unused UNUSED)
       return;
     }
 
+  rt_prune_sources();
+
  again:
   WALK_LIST(p, flush_proto_list)
     if (p->flushing)
@@ -1040,6 +1047,12 @@ proto_notify_state(struct proto *p, unsigned ps)
       if ((cs == FS_FEEDING) || (cs == FS_HAPPY))
 	proto_schedule_flush(p);
 
+      if (p->proto->multitable)
+	{
+	  rt_unlock_source(p->main_source);
+	  p->main_source = NULL;
+	}
+
       neigh_prune(); // FIXME convert neighbors to resource?
       rfree(p->pool);
       p->pool = NULL;