From e3bc10fdc49266db827af4e4062e639862037eb6 Mon Sep 17 00:00:00 2001
From: Ondrej Filip <feela@network.cz>
Date: Sat, 2 Sep 2000 08:54:40 +0000
Subject: Added stub interface. (Interface which is propagated to OSPF but it
 does not sends nor listens packets.)

I added some new options, please look at it and look into doc if it's OK.
---
 proto/ospf/config.Y |  2 ++
 proto/ospf/hello.c  |  2 ++
 proto/ospf/iface.c  |  4 +++-
 proto/ospf/ospf.c   | 20 ++++++++++++++++++--
 proto/ospf/ospf.h   |  2 ++
 proto/ospf/packet.c |  2 ++
 6 files changed, 29 insertions(+), 3 deletions(-)

(limited to 'proto')

diff --git a/proto/ospf/config.Y b/proto/ospf/config.Y
index 50ba371..459a236 100644
--- a/proto/ospf/config.Y
+++ b/proto/ospf/config.Y
@@ -88,6 +88,7 @@ ospf_iface_item:
  | TYPE NONBROADCAST { OSPF_PATT->type = OSPF_IT_NBMA ; }
  | TYPE POINTOPOINT { OSPF_PATT->type = OSPF_IT_PTP ; }
  | STRICT NONBROADCAST bool { OSPF_PATT->strictnbma = $3 ; }
+ | STUB bool { OSPF_PATT->stub = $2 ; }
  | NEIGHBORS '{' ipa_list '}'
  | AUTHENTICATION NONE { OSPF_PATT->autype=AU_NONE ; }
  | AUTHENTICATION SIMPLE { OSPF_PATT->autype=AU_SIMPLE ; }
@@ -137,6 +138,7 @@ ospf_iface_start:
   OSPF_PATT->deadc = DEADC_D;
   OSPF_PATT->type = OSPF_IT_UNDEF;
   OSPF_PATT->strictnbma = 0;
+  OSPF_PATT->stub = 0;
   init_list(&OSPF_PATT->nbma_list);
   OSPF_PATT->autype=AU_NONE;
  }
diff --git a/proto/ospf/hello.c b/proto/ospf/hello.c
index 94326c5..11f3c6f 100644
--- a/proto/ospf/hello.c
+++ b/proto/ospf/hello.c
@@ -249,6 +249,8 @@ hello_send(timer *timer,int poll, struct ospf_neighbor *dirn)
   if(timer==NULL) ifa=dirn->ifa;
   else ifa=(struct ospf_iface *)timer->data;
 
+  if(ifa->stub) return;		/* Don't send any packet on stub iface */
+
   p=(struct proto *)(ifa->proto);
   DBG("%s: Hello/Poll timer fired on interface %s.\n",
     p->name, ifa->iface->name);
diff --git a/proto/ospf/iface.c b/proto/ospf/iface.c
index 4c0e286..e82d8f3 100644
--- a/proto/ospf/iface.c
+++ b/proto/ospf/iface.c
@@ -370,7 +370,8 @@ ospf_iface_info(struct ospf_iface *ifa)
   cli_msg(-1015,"Interface \"%s\":", ifa->iface->name);
   cli_msg(-1015,"\tArea: %I (%u)", ifa->oa->areaid, ifa->oa->areaid);
   cli_msg(-1015,"\tType: %s %s", ospf_it[ifa->type], strict);
-  cli_msg(-1015,"\tState: %s", ospf_is[ifa->state]);
+  cli_msg(-1015,"\tState: %s %s", ospf_is[ifa->state],
+    ifa->stub ? "(stub)" : "");
   cli_msg(-1015,"\tPriority: %u", ifa->priority);
   cli_msg(-1015,"\tCost: %u", ifa->cost);
   cli_msg(-1015,"\tHello timer: %u", ifa->helloint);
@@ -429,6 +430,7 @@ ospf_ifa_add(struct object_lock *lock)
   ifa->strictnbma=ip->strictnbma;
   ifa->waitint=ip->waitint;
   ifa->deadc=ip->deadc;
+  ifa->stub=ip->stub;
   ifa->autype=ip->autype;
   memcpy(ifa->aukey,ip->password,8);
   ifa->options=2;	/* FIXME what options? */
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index d77158c..e69afbc 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -558,14 +558,30 @@ ospf_reconfigure(struct proto *p, struct proto_config *c)
 	{
 	  ifa->strictnbma=ip2->strictnbma;
 	  OSPF_TRACE(D_EVENTS,
-	    "Interface %s is now strict NBMA",
+	    "Interface %s is now strict NBMA.",
 	    ifa->iface->name);
 	}
 	if((ip1->strictnbma!=0)&&(ip2->strictnbma==0))
 	{
 	  ifa->strictnbma=ip2->strictnbma;
 	  OSPF_TRACE(D_EVENTS,
-	    "Interface %s is no longer strict NBMA",
+	    "Interface %s is no longer strict NBMA.",
+	    ifa->iface->name);
+	}
+
+	/* stub */
+	if((ip1->stub==0)&&(ip2->stub!=0))
+	{
+	  ifa->stub=ip2->stub;
+	  OSPF_TRACE(D_EVENTS,
+	    "Interface %s is now stub.",
+	    ifa->iface->name);
+	}
+	if((ip1->stub!=0)&&(ip2->stub==0))
+	{
+	  ifa->stub=ip2->stub;
+	  OSPF_TRACE(D_EVENTS,
+	    "Interface %s is no longer stub.",
 	    ifa->iface->name);
 	}
 
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 6a7c753..dd63c4c 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -103,6 +103,7 @@ struct ospf_iface {
   u32 bdrid;
   u8 type;		/* OSPF view of type */
   u8 strictnbma;	/* Can I talk with unknown neighbors? */
+  u8 stub;		/* Inactive interface */
 #define OSPF_IT_BCAST 0
 #define OSPF_IT_NBMA 1
 #define OSPF_IT_PTP 2
@@ -390,6 +391,7 @@ struct ospf_iface_patt {
   int type;
   int autype;
   int strictnbma;
+  int stub;
 #define AU_NONE 0
 #define AU_SIMPLE 1
 #define AU_CRYPT 2
diff --git a/proto/ospf/packet.c b/proto/ospf/packet.c
index b48fc80..382e542 100644
--- a/proto/ospf/packet.c
+++ b/proto/ospf/packet.c
@@ -84,6 +84,8 @@ ospf_rx_hook(sock *sk, int size)
   int i;
   u8 *pu8;
 
+  if(ifa->stub) return(1);
+
   DBG("%s: RX_Hook called on interface %s.\n",p->name, sk->iface->name);
 
   ps = (struct ospf_packet *) ipv4_skip_header(sk->rbuf, &size);
-- 
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