From 621ccdfe5acd2889956ec0f8e96b812acd09f168 Mon Sep 17 00:00:00 2001
From: Ondrej Filip <feela@network.cz>
Date: Tue, 13 Jul 2004 11:58:50 +0000
Subject: [PATCH] Bugfix - options bits were not included in LSAs Bugfix - E
 bit was not unset on stub areas.

---
 proto/ospf/dbdes.c    |  4 ++--
 proto/ospf/hello.c    |  4 ++--
 proto/ospf/iface.c    |  1 -
 proto/ospf/ospf.c     |  2 ++
 proto/ospf/ospf.h     | 36 ++++++++++++++++++++++++++++++++----
 proto/ospf/rt.c       |  6 +++---
 proto/ospf/topology.c |  4 ++--
 7 files changed, 43 insertions(+), 14 deletions(-)

diff --git a/proto/ospf/dbdes.c b/proto/ospf/dbdes.c
index 7bc87c50..2b65b1a3 100644
--- a/proto/ospf/dbdes.c
+++ b/proto/ospf/dbdes.c
@@ -40,7 +40,7 @@ ospf_dbdes_send(struct ospf_neighbor *n)
     op = (struct ospf_packet *) pkt;
     ospf_pkt_fill_hdr(ifa, pkt, DBDES_P);
     pkt->iface_mtu = htons(ifa->iface->mtu);
-    pkt->options = ifa->options;
+    pkt->options = ifa->oa->opt.byte;
     pkt->imms = n->myimms;
     pkt->ddseq = htonl(n->dds);
     length = sizeof(struct ospf_dbdes_packet);
@@ -64,7 +64,7 @@ ospf_dbdes_send(struct ospf_neighbor *n)
 
       ospf_pkt_fill_hdr(ifa, pkt, DBDES_P);
       pkt->iface_mtu = htons(ifa->iface->mtu);
-      pkt->options = ifa->options;
+      pkt->options = ifa->oa->opt.byte;
       pkt->ddseq = htonl(n->dds);
 
       j = i = (ospf_pkt_maxsize(ifa) - sizeof(struct ospf_dbdes_packet)) / sizeof(struct ospf_lsa_header);	/* Number of possible lsaheaders to send */
diff --git a/proto/ospf/hello.c b/proto/ospf/hello.c
index bc5e8763..73721d1f 100644
--- a/proto/ospf/hello.c
+++ b/proto/ospf/hello.c
@@ -44,7 +44,7 @@ ospf_hello_receive(struct ospf_hello_packet *ps,
     return;
   }
 
-  if (ps->options != ifa->options)
+  if (ps->options != ifa->oa->opt.byte)
   {
     log(L_ERR "%s%I%soptions mismatch (0x%x).", beg, faddr, rec, ps->options);
     return;
@@ -207,7 +207,7 @@ ospf_hello_send(timer * timer, int poll, struct ospf_neighbor *dirn)
   pkt->netmask = ipa_mkmask(ifa->iface->addr->pxlen);
   ipa_hton(pkt->netmask);
   pkt->helloint = ntohs(ifa->helloint);
-  pkt->options = ifa->options;
+  pkt->options = ifa->oa->opt.byte;
   pkt->priority = ifa->priority;
   pkt->deadint = htonl(ifa->deadc * ifa->helloint);
   pkt->dr = ifa->drip;
diff --git a/proto/ospf/iface.c b/proto/ospf/iface.c
index 054ea7c1..25d3441d 100644
--- a/proto/ospf/iface.c
+++ b/proto/ospf/iface.c
@@ -374,7 +374,6 @@ ospf_iface_new(struct proto_ospf *po, struct iface *iface, struct ospf_area_conf
   ifa->stub = ip->stub;
   ifa->autype = ip->autype;
   ifa->passwords = ip->passwords;
-  ifa->options = 2;		/* FIXME what options? */
 
   if (ip->type == OSPF_IT_UNDEF)
     ifa->type = ospf_iface_clasify(ifa->iface);
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index d948d652..ccdc502b 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -150,6 +150,8 @@ ospf_start(struct proto *p)
     add_area_nets(oa, ac);
     fib_init(&oa->rtr, p->pool, sizeof(ort), 16, ospf_rt_initort);
     if (oa->areaid == 0) po->backbone = oa;
+    oa->opt.byte = 0;
+    if(!oa->stub) oa->opt.bit.e = 1;
   }
 
   /* Add all virtual links as interfaces */
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 2a499f75..ea77aa98 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -95,6 +95,34 @@ struct ospf_area_config
   list net_list;
 };
 
+struct obits
+{
+#ifdef _BIG_ENDIAN
+  u8 unused2:2;
+  u8 dc:1;
+  u8 ea:1;
+  u8 np:1;
+  u8 mc:1;
+  u8 e:1;
+  u8 unused1:1;
+#else
+  u8 unused1:1;
+  u8 e:1;
+  u8 mc:1;
+  u8 np:1;
+  u8 ea:1;
+  u8 dc:1;
+  u8 unused2:2;
+#endif
+};
+
+union options
+{
+  u8 byte;
+  struct obits bit;
+};
+
+
 struct ospf_iface
 {
   node n;
@@ -111,8 +139,6 @@ struct ospf_iface
   u16 inftransdelay;		/* The estimated number of seconds it takes to
 				   transmit a Link State Update Packet over this
 				   interface.  LSAs contained in the update */
-  u8 priority;			/* A router priority for DR election */
-  u16 helloint;			/* number of seconds between hello sending */
   u32 waitint;			/* number of sec before changing state from wait */
   u32 rxmtint;			/* number of seconds between LSA retransmissions */
   u32 pollint;			/* Poll interval */
@@ -121,7 +147,7 @@ struct ospf_iface
   ip_addr vip;			/* IP of peer of virtual link */
   struct ospf_area *voa;	/* Area wich the vlink goes through */
   u16 autype;
-  u8 options;
+  u16 helloint;			/* number of seconds between hello sending */
   list *passwords;
   u32 csn;                      /* Crypt seq num. that will be sent net */
   ip_addr drip;			/* Designated router */
@@ -136,7 +162,6 @@ struct ospf_iface
 #define OSPF_IT_UNDEF 4
   u8 strictnbma;		/* Can I talk with unknown neighbors? */
   u8 stub;			/* Inactive interface */
-  u8 ioprob;
 #define OSPF_I_OK 0		/* Everything OK */
 #define OSPF_I_MC 1		/* I didn't open MC socket */
 #define OSPF_I_IP 2		/* I didn't open IP socet */
@@ -166,6 +191,8 @@ struct ospf_iface
   int orignet;			/* Schedule network LSA origination */
   int fadj;			/* Number of full adjacent neigh */
   list nbma_list;
+  u8 priority;			/* A router priority for DR election */
+  u8 ioprob;
 };
 
 struct ospf_md5
@@ -494,6 +521,7 @@ struct ospf_area
   struct proto_ospf *po;
   unsigned tick;
   struct fib rtr;		/* Routing tables for routers */
+  union options opt;            /* RFC2328 - A.2 */
 };
 
 struct proto_ospf
diff --git a/proto/ospf/rt.c b/proto/ospf/rt.c
index cee1589e..3d2ee513 100644
--- a/proto/ospf/rt.c
+++ b/proto/ospf/rt.c
@@ -243,7 +243,7 @@ ospf_rt_spfa(struct ospf_area *oa)
 	  DBG("PTP found.\n");
 	  break;
 	default:
-	  log("Unknown link type in router lsa.");
+	  log("Unknown link type in router lsa. (rid = %I)", act->lsa.id);
 	  break;
 	}
 	if (tmp)
@@ -339,7 +339,7 @@ link_back(struct ospf_area *oa, struct top_hash_entry *fol, struct top_hash_entr
           }
 	  break;
 	default:
-	  log("Unknown link type in router lsa.");
+	  log("Unknown link type in router lsa. (rid = %I)", fol->lsa.id);
 	  break;
 	}
       }
@@ -357,7 +357,7 @@ link_back(struct ospf_area *oa, struct top_hash_entry *fol, struct top_hash_entr
       }
       break;
     default:
-      log("Unknown link type in router lsa.");
+      bug("Unknown lsa type. (id = %I)", fol->lsa.id);
   }
   return 0;
 }
diff --git a/proto/ospf/topology.c b/proto/ospf/topology.c
index 215765e6..c368d91f 100644
--- a/proto/ospf/topology.c
+++ b/proto/ospf/topology.c
@@ -190,7 +190,7 @@ originate_rt_lsa(struct ospf_area *oa)
   lsa.id = rtid;
   lsa.type = LSA_T_RT;
   lsa.rt = rtid;
-  lsa.options = 0;
+  lsa.options = oa->opt.byte;
   if (oa->rt == NULL)
   {
     lsa.sn = LSA_INITSEQNO;
@@ -290,7 +290,7 @@ originate_net_lsa(struct ospf_iface *ifa)
   lsa.id = ipa_to_u32(ifa->iface->addr->ip);
   lsa.type = LSA_T_NET;
   lsa.rt = rtid;
-  lsa.options = 0;
+  lsa.options = ifa->oa->opt.byte;
   if (ifa->nlsa == NULL)
   {
     lsa.sn = LSA_INITSEQNO;