From f75747073e45c3129568c4936c2f34fa618db41e Mon Sep 17 00:00:00 2001
From: Ondrej Zajicek <santiago@crfreenet.org>
Date: Mon, 14 Dec 2009 21:17:15 +0100
Subject: Implements route reload for OSPF.

---
 proto/ospf/ospf.c | 17 ++++++++++++++++-
 proto/ospf/ospf.h |  3 ++-
 proto/ospf/rt.c   |  5 ++++-
 3 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index 4c2f1c2a..920f84f6 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -77,6 +77,7 @@
 #include "ospf.h"
 
 
+static int ospf_reload_routes(struct proto *p);
 static void ospf_rt_notify(struct proto *p, net * n, rte * new, rte * old UNUSED, ea_list * attrs);
 static void ospf_ifa_notify(struct proto *p, unsigned flags, struct ifa *a);
 static int ospf_rte_better(struct rte *new, struct rte *old);
@@ -234,9 +235,10 @@ ospf_init(struct proto_config *c)
 {
   struct proto *p = proto_new(c, sizeof(struct proto_ospf));
 
-  p->import_control = ospf_import_control;
   p->make_tmp_attrs = ospf_make_tmp_attrs;
   p->store_tmp_attrs = ospf_store_tmp_attrs;
+  p->import_control = ospf_import_control;
+  p->reload_routes = ospf_reload_routes;
   p->accept_ra_types = RA_OPTIMAL;
   p->rt_notify = ospf_rt_notify;
   p->if_notify = ospf_iface_notify;
@@ -345,6 +347,19 @@ schedule_rtcalc(struct proto_ospf *po)
   po->calcrt = 1;
 }
 
+static int
+ospf_reload_routes(struct proto *p)
+{
+  struct proto_ospf *po = (struct proto_ospf *) p;
+
+  if (po->calcrt != 2)
+    OSPF_TRACE(D_EVENTS, "Scheduling routing table calculation with route reload");
+
+  po->calcrt = 2;
+
+  return 1;
+}
+
 /**
  * area_disp - invokes origination of
  * router LSA and routing table cleanup
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 0930a065..0b25dedf 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -719,7 +719,8 @@ struct proto_ospf
   unsigned tick;
   struct top_graph *gr;		/* LSA graph */
   slist lsal;			/* List of all LSA's */
-  int calcrt;			/* Routing table calculation scheduled? */
+  int calcrt;			/* Routing table calculation scheduled?
+				   0=no, 1=normal, 2=forced reload */
   int cleanup;                  /* Should I cleanup after RT calculation? */
   list iface_list;		/* Interfaces we really use */
   list area_list;
diff --git a/proto/ospf/rt.c b/proto/ospf/rt.c
index ae815b3c..29283268 100644
--- a/proto/ospf/rt.c
+++ b/proto/ospf/rt.c
@@ -1133,6 +1133,9 @@ rt_sync(struct proto_ospf *po)
   struct area_net *anet;
   int flush;
 
+  /* This is used for forced reload of routes */
+  int reload = (po->calcrt == 2);
+
   OSPF_TRACE(D_EVENTS, "Starting routing table synchronisation");
 
   DBG("Now syncing my rt table with nest's\n");
@@ -1142,7 +1145,7 @@ again1:
   {
     nf = (ort *) nftmp;
     check_sum_lsa(po, nf, ORT_NET);
-    if (memcmp(&nf->n, &nf->o, sizeof(orta)))
+    if (reload || memcmp(&nf->n, &nf->o, sizeof(orta)))
     {				/* Some difference */
       net *ne;
       rta a0;
-- 
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