From 0bf2f2039e1fc95fe0fa3ee231711212f1f2b128 Mon Sep 17 00:00:00 2001
From: Ondrej Filip <feela@network.cz>
Date: Tue, 2 May 2000 23:09:44 +0000
Subject: Originating of network LSA.

---
 proto/ospf/iface.c    |  3 +--
 proto/ospf/ospf.h     |  1 +
 proto/ospf/topology.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 58 insertions(+), 2 deletions(-)

(limited to 'proto')

diff --git a/proto/ospf/iface.c b/proto/ospf/iface.c
index c7dfa2f1..bce763e0 100644
--- a/proto/ospf/iface.c
+++ b/proto/ospf/iface.c
@@ -111,7 +111,6 @@ ospf_int_sm(struct ospf_iface *ifa, int event)
       if(ifa->state==OSPF_IS_WAITING)
       {
         bdr_election(ifa ,p);
-        originate_rt_lsa(ifa->oa,po);
       }
       break;
     case ISM_NEICH:
@@ -119,8 +118,8 @@ ospf_int_sm(struct ospf_iface *ifa, int event)
         (ifa->state==OSPF_IS_BACKUP))
       {
         bdr_election(ifa ,p);
+        originate_rt_lsa(ifa->oa,po);
       }
-      originate_rt_lsa(ifa->oa,po);
       break;
     case ISM_DOWN:
       iface_chstate(ifa, OSPF_IS_DOWN);
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 9ce0be9a..7528921c 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -102,6 +102,7 @@ struct ospf_iface {
 #define WAIT_DMH 3	/* Value of Wait timer - not found it in RFC 
 			 * - using 3*HELLO
 			 */
+  struct top_hash_entry *nlsa;
 };
 
 struct ospf_packet {
diff --git a/proto/ospf/topology.c b/proto/ospf/topology.c
index a69c01a2..0020b572 100644
--- a/proto/ospf/topology.c
+++ b/proto/ospf/topology.c
@@ -244,6 +244,62 @@ originate_rt_lsa(struct ospf_area *oa, struct proto_ospf *po)
   return en;
 }
 
+void *
+originate_net_lsa_body(struct ospf_iface *ifa, u16 *length,
+  struct proto_ospf *po)
+{
+  u16 i=1;
+  struct ospf_neighbor *n;
+  u32 *body;
+
+  WALK_LIST(n,ifa->neigh_list)
+  {
+    if(n->state==NEIGHBOR_FULL) i++;
+  }
+  body=mb_alloc(po->proto.pool,sizeof(u32)*i);
+  i=1;
+  *body=po->proto.cf->global->router_id;
+  WALK_LIST(n,ifa->neigh_list)
+  {
+    if(n->state==NEIGHBOR_FULL)
+    {
+      *(body+i)=n->rid;
+      i++;
+    }
+  }
+  *length=i*sizeof(u32)+sizeof(struct ospf_lsa_header);
+  return body;
+}
+
+struct top_hash_entry *
+originate_net_lsa(struct ospf_iface *ifa, struct proto_ospf *po)
+{
+  struct ospf_lsa_header lsa;
+  u32 rtid=po->proto.cf->global->router_id;
+  struct top_hash_entry *en;
+  void *body;
+
+  DBG("%s: Originating Net lsa for iface \"%s\".\n", po->proto.name, ifa->iface->name);
+
+  lsa.age=0;
+  lsa.id=rtid;
+  lsa.type=LSA_T_NET;
+  lsa.rt=rtid;
+  if(ifa->nlsa==NULL)
+  {
+    lsa.sn=LSA_INITSEQNO;
+  }
+  else
+  {
+    lsa.sn=ifa->nlsa->lsa.sn+1;
+  }
+  body=originate_net_lsa_body(ifa, &lsa.length, po);
+  lsasum_calculate(&lsa,body,po);
+  en=lsa_install_new(&lsa, body, ifa->oa, &po->proto);
+  return en;
+}
+
+
   
 
 static void
-- 
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