From 78e2c6ccf16b41bc19a4cd69f959c8ae47e68b9d Mon Sep 17 00:00:00 2001
From: Ondrej Filip <feela@network.cz>
Date: Sat, 11 Aug 2001 14:01:54 +0000
Subject: [PATCH] I will not originate the same lsa before MINLSINTERVAL.

---
 proto/ospf/iface.c    |  5 +++++
 proto/ospf/iface.h    |  1 +
 proto/ospf/neighbor.c |  4 ++--
 proto/ospf/ospf.c     | 12 ++++++++++--
 proto/ospf/ospf.h     |  1 +
 proto/ospf/topology.c | 15 +++++++++++++++
 6 files changed, 34 insertions(+), 4 deletions(-)

diff --git a/proto/ospf/iface.c b/proto/ospf/iface.c
index 9cd46929..ac34d634 100644
--- a/proto/ospf/iface.c
+++ b/proto/ospf/iface.c
@@ -494,3 +494,8 @@ ospf_ifa_add(struct object_lock *lock)
   ospf_int_sm(ifa, ISM_UP);
 }
 
+void
+schedule_net_lsa(struct ospf_iface *ifa)
+{
+  ifa->orignet=1;
+}
diff --git a/proto/ospf/iface.h b/proto/ospf/iface.h
index 99a32bfe..350f5317 100644
--- a/proto/ospf/iface.h
+++ b/proto/ospf/iface.h
@@ -23,5 +23,6 @@ struct ospf_iface *find_iface(struct proto_ospf *p, struct iface *what);
 void ospf_if_notify(struct proto *p, unsigned flags, struct iface *iface);
 void ospf_iface_info(struct ospf_iface *ifa);
 void ospf_ifa_add(struct object_lock *lock);
+void schedule_net_lsa(struct ospf_iface *ifa);
 
 #endif /* _BIRD_OSPF_IFACE_H_ */
diff --git a/proto/ospf/neighbor.c b/proto/ospf/neighbor.c
index ca92e9d6..cbb3e5e1 100644
--- a/proto/ospf/neighbor.c
+++ b/proto/ospf/neighbor.c
@@ -58,14 +58,14 @@ neigh_chstate(struct ospf_neighbor *n, u8 state)
     {
       ifa->fadj--;
       schedule_rt_lsa(ifa->oa);
-      originate_net_lsa(ifa);
+      schedule_net_lsa(ifa);
     }
   
     if(state==NEIGHBOR_FULL)	/* Increase number of adjacencies */
     {
       ifa->fadj++;
       schedule_rt_lsa(ifa->oa);
-      originate_net_lsa(ifa);
+      schedule_net_lsa(ifa);
     }
     if(oldstate>=NEIGHBOR_EXSTART && state<NEIGHBOR_EXSTART)
     {
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index 151187f9..8447e698 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -265,7 +265,8 @@ schedule_rtcalc(struct ospf_area *oa)
  * @timer: it's called every @ospf_area->tick seconds
  *
  * It ivokes aging and when @ospf_area->origrt is set to 1, start
- * function for origination of router LSA. It also start routing
+ * function for origination of router LSA and network LSA's.
+ * It also start routing
  * table calculation when @ospf_area->calcrt is set.
  */
 void
@@ -273,13 +274,20 @@ area_disp(timer *timer)
 {
   struct ospf_area *oa=timer->data;
   struct top_hash_entry *en,*nxt;
+  struct proto_ospf *po=oa->po;
+  struct ospf_iface *ifa;
 
   /* First of all try to age LSA DB */
   ospf_age(oa);
 
   /* Now try to originage rt_lsa */
   if(oa->origrt) originate_rt_lsa(oa);
-  oa->origrt=0;
+
+  /* Now try to originate network LSA's */
+  WALK_LIST(ifa, po->iface_list)
+  {
+    if(ifa->orignet&&(ifa->an==oa->areaid)) originate_net_lsa(ifa);
+  }
 
   if(oa->calcrt) ospf_rt_spfa(oa);
   oa->calcrt=0;
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 3eb46598..11283a7e 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -136,6 +136,7 @@ struct ospf_iface {
 			 * - using 4*HELLO
 			 */
   struct top_hash_entry *nlsa;	/* Originated net lsa */
+  int orignet;		/* Schedule network LSA origination */
   int fadj;		/* Number of full adjacent neigh */
   list nbma_list;
 };
diff --git a/proto/ospf/topology.c b/proto/ospf/topology.c
index a0dd18a6..c07b1a79 100644
--- a/proto/ospf/topology.c
+++ b/proto/ospf/topology.c
@@ -189,6 +189,13 @@ originate_rt_lsa(struct ospf_area *oa)
   struct top_hash_entry *en;
   void *body;
 
+  if((oa->rt)&&((oa->rt->inst_t+MINLSINTERVAL))>now) return;
+	/*
+         * Tick is probably set to very low value. We cannot
+	 * originate new LSA before MINLSINTERVAL. We will
+	 * try to do it next tick.
+         */
+
   OSPF_TRACE(D_EVENTS, "Originating RT_lsa for area \"%I\".",oa->areaid);
 
   lsa.age=0;
@@ -210,6 +217,7 @@ originate_rt_lsa(struct ospf_area *oa)
   oa->rt=en;
   flood_lsa(NULL,NULL,&oa->rt->lsa,po,NULL,oa,1);
   schedule_rtcalc(oa);
+  oa->origrt=0;
 }
 
 void *
@@ -260,6 +268,12 @@ originate_net_lsa(struct ospf_iface *ifa)
   struct proto *p=&po->proto;
   void *body;
 
+  if(ifa->nlsa&&((ifa->nlsa->inst_t+MINLSINTERVAL)>now)) return;
+  /*
+   * It's too early to originate new network LSA. We will
+   * try to do it next tick
+   */
+
   OSPF_TRACE(D_EVENTS, "Originating Net lsa for iface \"%s\".",
     ifa->iface->name);
 
@@ -300,6 +314,7 @@ originate_net_lsa(struct ospf_iface *ifa)
   lsasum_calculate(&lsa,body,po);
   ifa->nlsa=lsa_install_new(&lsa, body, ifa->oa);
   flood_lsa(NULL,NULL,&ifa->nlsa->lsa,po,NULL,ifa->oa,1);
+  ifa->orignet=0;
 }
 
 static void *