Minor rte/rta interface changes:

  o  rte can now contain a pointer to both cached and uncached rta. Protocols
     which don't need their own attribute caching can now just fill-in a rta,
     link it to rte without any calls to attribute cache and call rte_update()
     which will replace rte->attrs by a cached copy.

  o  In order to support this, one of previously pad bytes in struct rta
     now holds new attribute flags (RTAF_CACHED). If you call rte_update()
     with uncached rta, you _must_ clear these flags. In other cases rta_lookup()
     sets it appropriately.

  o  Added rte_free() which is useful when you construct a rte and then the
     circumstances change and you decide not to use it for an update. (Needed
     for temporary rte's in kernel syncer...)

1 files changed, 3 insertions, 0 deletions

diff --git a/nest/rt-attr.c b/nest/rt-attr.c
index 9f7fd2b..afce7f8 100644
--- a/nest/rt-attr.c
+++ b/nest/rt-attr.c
@@ -116,6 +116,7 @@ rta_lookup(rta *o)
     if (rta_same(r, o))
       return rta_clone(r);
   r = rta_copy(o);
+  r->aflags = RTAF_CACHED;
   r->next = first_rta;
   first_rta = r;
   return r;
@@ -144,6 +145,8 @@ rta_dump(rta *a)
     debug(" EXT");
   if (a->flags & RTF_TAGGED)
     debug(" TAG");
+  if (!(a->aflags & RTAF_CACHED))
+    debug(" !CACHED");
   debug(" <-%I", a->from);
   if (a->dest == RTD_ROUTER)
     debug(" ->%I", a->gw);