Indentation only. No any functional changes.

1 files changed, 301 insertions, 267 deletions

diff --git a/isisd/isis_route.c b/isisd/isis_route.c
index b889d3b8ab..90808681c4 100644
--- a/isisd/isis_route.c
+++ b/isisd/isis_route.c
@@ -55,27 +55,28 @@ extern struct thread_master *master;
 
 struct isis_nexthop *
 isis_nexthop_create (struct in_addr *ip, unsigned int ifindex)
-                     
 {
   struct listnode *node;
   struct isis_nexthop *nexthop;
-  
-  for (node = listhead (isis->nexthops); node; nextnode (node)) {
-    nexthop = getdata (node);
-    if (nexthop->ifindex != ifindex)
-      continue;
-    if (ip && memcmp (&nexthop->ip, ip, sizeof (struct in_addr)) != 0)
-      continue; 
-
-    nexthop->lock++;
-    return nexthop;
-  }
-  
+
+  for (node = listhead (isis->nexthops); node; nextnode (node))
+    {
+      nexthop = getdata (node);
+      if (nexthop->ifindex != ifindex)
+	continue;
+      if (ip && memcmp (&nexthop->ip, ip, sizeof (struct in_addr)) != 0)
+	continue;
+
+      nexthop->lock++;
+      return nexthop;
+    }
+
   nexthop = XMALLOC (MTYPE_ISIS_NEXTHOP, sizeof (struct isis_nexthop));
-  if (!nexthop) {
-    zlog_err ("ISIS-Rte: isis_nexthop_create: out of memory!");
-  }
-  
+  if (!nexthop)
+    {
+      zlog_err ("ISIS-Rte: isis_nexthop_create: out of memory!");
+    }
+
   memset (nexthop, 0, sizeof (struct isis_nexthop));
   nexthop->ifindex = ifindex;
   memcpy (&nexthop->ip, ip, sizeof (struct in_addr));
@@ -85,32 +86,33 @@ isis_nexthop_create (struct in_addr *ip, unsigned int ifindex)
   return nexthop;
 }
 
-
 void
 isis_nexthop_delete (struct isis_nexthop *nexthop)
 {
   nexthop->lock--;
-  if (nexthop->lock == 0) {
-    listnode_delete (isis->nexthops, nexthop);
-    XFREE (MTYPE_ISIS_NEXTHOP, nexthop);
-  }
-    
+  if (nexthop->lock == 0)
+    {
+      listnode_delete (isis->nexthops, nexthop);
+      XFREE (MTYPE_ISIS_NEXTHOP, nexthop);
+    }
+
   return;
 }
 
 int
-nexthoplookup (struct list *nexthops, struct in_addr *ip, 
-               unsigned int ifindex)
+nexthoplookup (struct list *nexthops, struct in_addr *ip,
+	       unsigned int ifindex)
 {
   struct listnode *node;
   struct isis_nexthop *nh;
 
-  for (node = listhead (nexthops); node; nextnode (node)) {
-    nh = getdata (node);
-    if (!(memcmp (ip, &nh->ip, sizeof (struct in_addr))) && 
-        ifindex == nh->ifindex)
-      return 1;
-  }
+  for (node = listhead (nexthops); node; nextnode (node))
+    {
+      nh = getdata (node);
+      if (!(memcmp (ip, &nh->ip, sizeof (struct in_addr))) &&
+	  ifindex == nh->ifindex)
+	return 1;
+    }
 
   return 0;
 }
@@ -119,9 +121,9 @@ void
 nexthop_print (struct isis_nexthop *nh)
 {
   u_char buf[BUFSIZ];
-  
+
   inet_ntop (AF_INET, &nh->ip, buf, BUFSIZ);
-  
+
   zlog_info ("      %s %u", buf, nh->ifindex);
 }
 
@@ -129,24 +131,25 @@ void
 nexthops_print (struct list *nhs)
 {
   struct listnode *node;
-  
-  for (node = listhead(nhs); node; nextnode (node))
+
+  for (node = listhead (nhs); node; nextnode (node))
     nexthop_print (getdata (node));
 }
 
 #ifdef HAVE_IPV6
 
 struct isis_nexthop6 *
-isis_nexthop6_new (struct in6_addr *ip6, unsigned int ifindex) 
+isis_nexthop6_new (struct in6_addr *ip6, unsigned int ifindex)
 {
-  
+
   struct isis_nexthop6 *nexthop6;
-  
+
   nexthop6 = XMALLOC (MTYPE_ISIS_NEXTHOP6, sizeof (struct isis_nexthop6));
-  if (!nexthop6) {
-    zlog_err ("ISIS-Rte: isis_nexthop_create6: out of memory!");
-  }
-  
+  if (!nexthop6)
+    {
+      zlog_err ("ISIS-Rte: isis_nexthop_create6: out of memory!");
+    }
+
   memset (nexthop6, 0, sizeof (struct isis_nexthop6));
   nexthop6->ifindex = ifindex;
   memcpy (&nexthop6->ip6, ip6, sizeof (struct in6_addr));
@@ -157,54 +160,55 @@ isis_nexthop6_new (struct in6_addr *ip6, unsigned int ifindex)
 
 struct isis_nexthop6 *
 isis_nexthop6_create (struct in6_addr *ip6, unsigned int ifindex)
-                     
 {
   struct listnode *node;
   struct isis_nexthop6 *nexthop6;
-  
-  for (node = listhead (isis->nexthops6); node; nextnode (node)) {
-    nexthop6 = getdata (node);
-    if (nexthop6->ifindex != ifindex)
-      continue;
-    if (ip6 && memcmp (&nexthop6->ip6, ip6, sizeof (struct in6_addr)) != 0)
-      continue; 
-
-    nexthop6->lock++;
-    return nexthop6;
-  }
-  
+
+  for (node = listhead (isis->nexthops6); node; nextnode (node))
+    {
+      nexthop6 = getdata (node);
+      if (nexthop6->ifindex != ifindex)
+	continue;
+      if (ip6 && memcmp (&nexthop6->ip6, ip6, sizeof (struct in6_addr)) != 0)
+	continue;
+
+      nexthop6->lock++;
+      return nexthop6;
+    }
+
   nexthop6 = isis_nexthop6_new (ip6, ifindex);
 
   return nexthop6;
 }
 
-
 void
 isis_nexthop6_delete (struct isis_nexthop6 *nexthop6)
 {
 
   nexthop6->lock--;
-  if (nexthop6->lock == 0) {
-    listnode_delete (isis->nexthops6, nexthop6);
-    XFREE (MTYPE_ISIS_NEXTHOP6, nexthop6);
-  }
-    
+  if (nexthop6->lock == 0)
+    {
+      listnode_delete (isis->nexthops6, nexthop6);
+      XFREE (MTYPE_ISIS_NEXTHOP6, nexthop6);
+    }
+
   return;
 }
 
 int
-nexthop6lookup (struct list *nexthops6, struct in6_addr *ip6, 
-                unsigned int ifindex)
+nexthop6lookup (struct list *nexthops6, struct in6_addr *ip6,
+		unsigned int ifindex)
 {
   struct listnode *node;
   struct isis_nexthop6 *nh6;
 
-  for (node = listhead (nexthops6); node; nextnode (node)) {
-    nh6 = getdata (node);
-    if (!(memcmp (ip6, &nh6->ip6, sizeof (struct in6_addr))) && 
-        ifindex == nh6->ifindex)
-      return 1;
-  }
+  for (node = listhead (nexthops6); node; nextnode (node))
+    {
+      nh6 = getdata (node);
+      if (!(memcmp (ip6, &nh6->ip6, sizeof (struct in6_addr))) &&
+	  ifindex == nh6->ifindex)
+	return 1;
+    }
 
   return 0;
 }
@@ -213,9 +217,9 @@ void
 nexthop6_print (struct isis_nexthop6 *nh6)
 {
   u_char buf[BUFSIZ];
-  
+
   inet_ntop (AF_INET6, &nh6->ip6, buf, BUFSIZ);
-  
+
   zlog_info ("      %s %u", buf, nh6->ifindex);
 }
 
@@ -223,8 +227,8 @@ void
 nexthops6_print (struct list *nhs6)
 {
   struct listnode *node;
-  
-  for (node = listhead(nhs6); node; nextnode (node))
+
+  for (node = listhead (nhs6); node; nextnode (node))
     nexthop6_print (getdata (node));
 }
 
@@ -240,15 +244,17 @@ adjinfo2nexthop (struct list *nexthops, struct isis_adjacency *adj)
 
   if (adj->ipv4_addrs == NULL)
     return;
-  for (node = listhead (adj->ipv4_addrs); node; nextnode (node)) {
-    ipv4_addr = getdata (node);
-    if (!nexthoplookup (nexthops, ipv4_addr, 
-                        adj->circuit->interface->ifindex)) {
-      nh = isis_nexthop_create (ipv4_addr, 
-                                adj->circuit->interface->ifindex);
-      listnode_add (nexthops, nh);
+  for (node = listhead (adj->ipv4_addrs); node; nextnode (node))
+    {
+      ipv4_addr = getdata (node);
+      if (!nexthoplookup (nexthops, ipv4_addr,
+			  adj->circuit->interface->ifindex))
+	{
+	  nh = isis_nexthop_create (ipv4_addr,
+				    adj->circuit->interface->ifindex);
+	  listnode_add (nexthops, nh);
+	}
     }
-  }
 }
 
 #ifdef HAVE_IPV6
@@ -258,156 +264,170 @@ adjinfo2nexthop6 (struct list *nexthops6, struct isis_adjacency *adj)
   struct listnode *node;
   struct in6_addr *ipv6_addr;
   struct isis_nexthop6 *nh6;
-  
+
   if (!adj->ipv6_addrs)
     return;
 
-  for (node = listhead (adj->ipv6_addrs); node; nextnode (node)) {
-    ipv6_addr = getdata (node);
-    if (!nexthop6lookup (nexthops6, ipv6_addr, 
-                         adj->circuit->interface->ifindex)) {
-      nh6 = isis_nexthop6_create (ipv6_addr, 
-                                  adj->circuit->interface->ifindex);
-      listnode_add (nexthops6, nh6);
+  for (node = listhead (adj->ipv6_addrs); node; nextnode (node))
+    {
+      ipv6_addr = getdata (node);
+      if (!nexthop6lookup (nexthops6, ipv6_addr,
+			   adj->circuit->interface->ifindex))
+	{
+	  nh6 = isis_nexthop6_create (ipv6_addr,
+				      adj->circuit->interface->ifindex);
+	  listnode_add (nexthops6, nh6);
+	}
     }
-  }
 }
 #endif /* HAVE_IPV6 */
 
 struct isis_route_info *
-isis_route_info_new (uint32_t cost, uint32_t depth, u_char family, 
-                     struct list *adjacencies)
+isis_route_info_new (uint32_t cost, uint32_t depth, u_char family,
+		     struct list *adjacencies)
 {
   struct isis_route_info *rinfo;
   struct isis_adjacency *adj;
   struct listnode *node;
-  
+
   rinfo = XMALLOC (MTYPE_ISIS_ROUTE_INFO, sizeof (struct isis_route_info));
-  if (!rinfo) {
-    zlog_err ("ISIS-Rte: isis_route_info_new: out of memory!");
-    return NULL;
-  }
+  if (!rinfo)
+    {
+      zlog_err ("ISIS-Rte: isis_route_info_new: out of memory!");
+      return NULL;
+    }
   memset (rinfo, 0, sizeof (struct isis_route_info));
 
-  if (family == AF_INET) {
-    rinfo->nexthops = list_new ();
-    for (node = listhead (adjacencies); node; nextnode (node)) {
-      adj = getdata (node);
-      adjinfo2nexthop (rinfo->nexthops, adj);
+  if (family == AF_INET)
+    {
+      rinfo->nexthops = list_new ();
+      for (node = listhead (adjacencies); node; nextnode (node))
+	{
+	  adj = getdata (node);
+	  adjinfo2nexthop (rinfo->nexthops, adj);
+	}
     }
-  }
 #ifdef HAVE_IPV6
-  if (family == AF_INET6) {
-    rinfo->nexthops6 = list_new ();
-    for (node = listhead (adjacencies); node; nextnode (node)) {
-      adj =getdata (node);
-      adjinfo2nexthop6 (rinfo->nexthops6, adj);
+  if (family == AF_INET6)
+    {
+      rinfo->nexthops6 = list_new ();
+      for (node = listhead (adjacencies); node; nextnode (node))
+	{
+	  adj = getdata (node);
+	  adjinfo2nexthop6 (rinfo->nexthops6, adj);
+	}
     }
-  }
-    
+
 #endif /* HAVE_IPV6 */
 
   rinfo->cost = cost;
   rinfo->depth = depth;
-      
+
   return rinfo;
 }
 
-
 void
 isis_route_info_delete (struct isis_route_info *route_info)
 {
-  
-  if (route_info->nexthops) {
-    route_info->nexthops->del = (void *)isis_nexthop_delete;
-    list_delete (route_info->nexthops);
-  }
-   
+  if (route_info->nexthops)
+    {
+      route_info->nexthops->del = (void *) isis_nexthop_delete;
+      list_delete (route_info->nexthops);
+    }
+
 #ifdef HAVE_IPV6
-  if (route_info->nexthops6) {
-      route_info->nexthops6->del = (void *)isis_nexthop6_delete;
+  if (route_info->nexthops6)
+    {
+      route_info->nexthops6->del = (void *) isis_nexthop6_delete;
       list_delete (route_info->nexthops6);
-  }
+    }
 #endif /* HAVE_IPV6 */
- 
+
   XFREE (MTYPE_ISIS_ROUTE_INFO, route_info);
 }
 
 int
-isis_route_info_same_attrib (struct isis_route_info *new, 
-                             struct isis_route_info *old)
+isis_route_info_same_attrib (struct isis_route_info *new,
+			     struct isis_route_info *old)
 {
   if (new->cost != old->cost)
     return 0;
   if (new->depth != old->depth)
     return 0;
-  
+
   return 1;
 }
 
 int
-isis_route_info_same (struct isis_route_info *new, struct isis_route_info *old,
-                      u_char family)
+isis_route_info_same (struct isis_route_info *new,
+		      struct isis_route_info *old, u_char family)
 {
-  struct listnode  *node;
+  struct listnode *node;
   struct isis_nexthop *nexthop;
 #ifdef HAVE_IPV6
   struct isis_nexthop6 *nexthop6;
 #endif /* HAVE_IPV6 */
   if (!isis_route_info_same_attrib (new, old))
     return 0;
-  
-  if (family == AF_INET) {
-    for (node = listhead (new->nexthops); node; nextnode (node)) {
-      nexthop = (struct isis_nexthop *) getdata (node);
-      if (nexthoplookup (old->nexthops, &nexthop->ip, nexthop->ifindex) == 0)
-        return 0;
-    }
-  
-    for (node = listhead (old->nexthops); node; nextnode (node)) {
-      nexthop = (struct isis_nexthop *) getdata (node);
-      if (nexthoplookup (new->nexthops, &nexthop->ip, nexthop->ifindex) == 0)
-        return 0;
+
+  if (family == AF_INET)
+    {
+      for (node = listhead (new->nexthops); node; nextnode (node))
+	{
+	  nexthop = (struct isis_nexthop *) getdata (node);
+	  if (nexthoplookup (old->nexthops, &nexthop->ip, nexthop->ifindex) ==
+	      0)
+	    return 0;
+	}
+
+      for (node = listhead (old->nexthops); node; nextnode (node))
+	{
+	  nexthop = (struct isis_nexthop *) getdata (node);
+	  if (nexthoplookup (new->nexthops, &nexthop->ip, nexthop->ifindex) ==
+	      0)
+	    return 0;
+	}
     }
-  }
 #ifdef HAVE_IPV6
-  else if (family == AF_INET6) {
-    for (node = listhead (new->nexthops6); node; nextnode (node)) {
-      nexthop6 = (struct isis_nexthop6 *) getdata (node);
-      if (nexthop6lookup (old->nexthops6, &nexthop6->ip6, 
-                          nexthop6->ifindex) == 0)
-        return 0;
-    }
-  
-    for (node = listhead (old->nexthops6); node; nextnode (node)) {
-      nexthop6 = (struct isis_nexthop6 *) getdata (node);
-      if (nexthop6lookup (new->nexthops6, &nexthop6->ip6, 
-                          nexthop6->ifindex) == 0)
-        return 0;
+  else if (family == AF_INET6)
+    {
+      for (node = listhead (new->nexthops6); node; nextnode (node))
+	{
+	  nexthop6 = (struct isis_nexthop6 *) getdata (node);
+	  if (nexthop6lookup (old->nexthops6, &nexthop6->ip6,
+			      nexthop6->ifindex) == 0)
+	    return 0;
+	}
+
+      for (node = listhead (old->nexthops6); node; nextnode (node))
+	{
+	  nexthop6 = (struct isis_nexthop6 *) getdata (node);
+	  if (nexthop6lookup (new->nexthops6, &nexthop6->ip6,
+			      nexthop6->ifindex) == 0)
+	    return 0;
+	}
     }
-  }
 #endif /* HAVE_IPV6 */
 
   return 1;
 }
 
-
 void
 isis_nexthops_merge (struct list *new, struct list *old)
 {
   struct listnode *node;
   struct isis_nexthop *nexthop;
 
-  for (node = listhead (new); node; nextnode (node)) {
-    nexthop = (struct isis_nexthop *) getdata (node);
-    if (nexthoplookup (old, &nexthop->ip, nexthop->ifindex))
-      continue;
-    listnode_add (old, nexthop);
-    nexthop->lock++;
-  }
+  for (node = listhead (new); node; nextnode (node))
+    {
+      nexthop = (struct isis_nexthop *) getdata (node);
+      if (nexthoplookup (old, &nexthop->ip, nexthop->ifindex))
+	continue;
+      listnode_add (old, nexthop);
+      nexthop->lock++;
+    }
 }
 
-
 #ifdef HAVE_IPV6
 void
 isis_nexthops6_merge (struct list *new, struct list *old)
@@ -415,123 +435,133 @@ isis_nexthops6_merge (struct list *new, struct list *old)
   struct listnode *node;
   struct isis_nexthop6 *nexthop6;
 
-  for (node = listhead (new); node; nextnode (node)) {
-    nexthop6 = (struct isis_nexthop6 *) getdata (node);
-    if (nexthop6lookup (old, &nexthop6->ip6, nexthop6->ifindex))
-      continue;
-    listnode_add (old, nexthop6);
-    nexthop6->lock++;
-  }
+  for (node = listhead (new); node; nextnode (node))
+    {
+      nexthop6 = (struct isis_nexthop6 *) getdata (node);
+      if (nexthop6lookup (old, &nexthop6->ip6, nexthop6->ifindex))
+	continue;
+      listnode_add (old, nexthop6);
+      nexthop6->lock++;
+    }
 }
 #endif /* HAVE_IPV6 */
 
 void
-isis_route_info_merge (struct isis_route_info *new, 
-                       struct isis_route_info *old, u_char family)
+isis_route_info_merge (struct isis_route_info *new,
+		       struct isis_route_info *old, u_char family)
 {
-  
-  if (family == AF_INET) 
+  if (family == AF_INET)
     isis_nexthops_merge (new->nexthops, old->nexthops);
 #ifdef HAVE_IPV6
-  else if (family == AF_INET6) 
+  else if (family == AF_INET6)
     isis_nexthops6_merge (new->nexthops6, old->nexthops6);
 #endif /* HAVE_IPV6 */
-    
+
   return;
 }
 
-
 int
-isis_route_info_prefer_new (struct isis_route_info *new, 
-                            struct isis_route_info *old)
+isis_route_info_prefer_new (struct isis_route_info *new,
+			    struct isis_route_info *old)
 {
-  
   if (!CHECK_FLAG (old->flag, ISIS_ROUTE_FLAG_ACTIVE))
     return 1;
 
   if (new->cost < old->cost)
     return 1;
-  
+
   return 0;
 }
 
-
 struct isis_route_info *
 isis_route_create (struct prefix *prefix, u_int32_t cost, u_int32_t depth,
-                   struct list *adjacencies, struct isis_area *area)
+		   struct list *adjacencies, struct isis_area *area)
 {
   struct route_node *route_node;
   struct isis_route_info *rinfo_new, *rinfo_old, *route_info = NULL;
   u_char buff[BUFSIZ];
   u_char family;
-  
+
   family = prefix->family;
   /* for debugs */
   prefix2str (prefix, buff, BUFSIZ);
-  
+
   rinfo_new = isis_route_info_new (cost, depth, family, adjacencies);
-  if (!rinfo_new) {
-    zlog_err ("ISIS-Rte (%s): isis_route_create: out of memory!",
-	      area->area_tag);
-    return NULL;
-  }
-  
+  if (!rinfo_new)
+    {
+      zlog_err ("ISIS-Rte (%s): isis_route_create: out of memory!",
+		area->area_tag);
+      return NULL;
+    }
+
   if (family == AF_INET)
-    route_node = route_node_get (area->route_table, prefix);  
+    route_node = route_node_get (area->route_table, prefix);
 #ifdef HAVE_IPV6
   else if (family == AF_INET6)
-    route_node = route_node_get (area->route_table6, prefix);  
+    route_node = route_node_get (area->route_table6, prefix);
 #endif /* HAVE_IPV6 */
-  else 
+  else
     return NULL;
-  rinfo_old = route_node->info;  
-  if (!rinfo_old) {
-    if (isis->debugs & DEBUG_RTE_EVENTS)
-      zlog_info ("ISIS-Rte (%s) route created: %s", area->area_tag, buff);
-    SET_FLAG(rinfo_new->flag, ISIS_ROUTE_FLAG_ACTIVE);
-    route_node->info = rinfo_new;
-    return rinfo_new;
-  }
-  
+  rinfo_old = route_node->info;
+  if (!rinfo_old)
+    {
+      if (isis->debugs & DEBUG_RTE_EVENTS)
+	zlog_info ("ISIS-Rte (%s) route created: %s", area->area_tag, buff);
+      SET_FLAG (rinfo_new->flag, ISIS_ROUTE_FLAG_ACTIVE);
+      route_node->info = rinfo_new;
+      return rinfo_new;
+    }
+
   if (isis->debugs & DEBUG_RTE_EVENTS)
-    zlog_info ("ISIS-Rte (%s) route already exists: %s", area->area_tag, buff);
-  
-  if (isis_route_info_same (rinfo_new, rinfo_old, family)) {
-    if (isis->debugs & DEBUG_RTE_EVENTS)
-      zlog_info ("ISIS-Rte (%s) route unchanged: %s", area->area_tag, buff);
-    isis_route_info_delete (rinfo_new);
-    route_info = rinfo_old;
-  } else if (isis_route_info_same_attrib (rinfo_new, rinfo_old)) {
-    /* merge the nexthop lists */
-    if (isis->debugs & DEBUG_RTE_EVENTS)
-        zlog_info ("ISIS-Rte (%s) route changed (same attribs): %s", 
-                   area->area_tag, buff);
-#ifdef EXTREME_DEBUG
-    zlog_info ("Old nexthops");
-    nexthops6_print (rinfo_old->nexthops6);
-    zlog_info ("New nexthops");
-    nexthops6_print (rinfo_new->nexthops6);
-#endif /* EXTREME_DEBUG */
-    isis_route_info_merge (rinfo_new, rinfo_old, family);
-    isis_route_info_delete (rinfo_new);
-    route_info = rinfo_old;
-  } else {
-    if (isis_route_info_prefer_new (rinfo_new, rinfo_old)) {
+    zlog_info ("ISIS-Rte (%s) route already exists: %s", area->area_tag,
+	       buff);
+
+  if (isis_route_info_same (rinfo_new, rinfo_old, family))
+    {
       if (isis->debugs & DEBUG_RTE_EVENTS)
-        zlog_info ("ISIS-Rte (%s) route changed: %s", area->area_tag, buff);
-      isis_route_info_delete (rinfo_old);
-      route_info = rinfo_new;
-    } else {
+	zlog_info ("ISIS-Rte (%s) route unchanged: %s", area->area_tag, buff);
+      isis_route_info_delete (rinfo_new);
+      route_info = rinfo_old;
+    }
+  else if (isis_route_info_same_attrib (rinfo_new, rinfo_old))
+    {
+      /* merge the nexthop lists */
       if (isis->debugs & DEBUG_RTE_EVENTS)
-        zlog_info ("ISIS-Rte (%s) route rejected: %s", area->area_tag, buff);
+	zlog_info ("ISIS-Rte (%s) route changed (same attribs): %s",
+		   area->area_tag, buff);
+#ifdef EXTREME_DEBUG
+      zlog_info ("Old nexthops");
+      nexthops6_print (rinfo_old->nexthops6);
+      zlog_info ("New nexthops");
+      nexthops6_print (rinfo_new->nexthops6);
+#endif /* EXTREME_DEBUG */
+      isis_route_info_merge (rinfo_new, rinfo_old, family);
       isis_route_info_delete (rinfo_new);
       route_info = rinfo_old;
     }
-  }
-  
+  else
+    {
+      if (isis_route_info_prefer_new (rinfo_new, rinfo_old))
+	{
+	  if (isis->debugs & DEBUG_RTE_EVENTS)
+	    zlog_info ("ISIS-Rte (%s) route changed: %s", area->area_tag,
+		       buff);
+	  isis_route_info_delete (rinfo_old);
+	  route_info = rinfo_new;
+	}
+      else
+	{
+	  if (isis->debugs & DEBUG_RTE_EVENTS)
+	    zlog_info ("ISIS-Rte (%s) route rejected: %s", area->area_tag,
+		       buff);
+	  isis_route_info_delete (rinfo_new);
+	  route_info = rinfo_old;
+	}
+    }
+
   SET_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ACTIVE);
   route_node->info = route_info;
-  
+
   return route_info;
 }
 
@@ -549,21 +579,23 @@ isis_route_delete (struct prefix *prefix, struct route_table *table)
   rode = route_node_get (table, prefix);
   rinfo = rode->info;
 
-  if (rinfo == NULL) {
-    if (isis->debugs & DEBUG_RTE_EVENTS)
-      zlog_info ("ISIS-Rte: tried to delete non-existant route %s", buff);
-    return;
-  }
-
-  if (CHECK_FLAG (rinfo->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNC)) {
-    UNSET_FLAG (rinfo->flag, ISIS_ROUTE_FLAG_ACTIVE);
-    if (isis->debugs & DEBUG_RTE_EVENTS)
-      zlog_info ("ISIS-Rte: route delete  %s", buff);
-    isis_zebra_route_update (prefix, rinfo);
-  }
+  if (rinfo == NULL)
+    {
+      if (isis->debugs & DEBUG_RTE_EVENTS)
+	zlog_info ("ISIS-Rte: tried to delete non-existant route %s", buff);
+      return;
+    }
+
+  if (CHECK_FLAG (rinfo->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNC))
+    {
+      UNSET_FLAG (rinfo->flag, ISIS_ROUTE_FLAG_ACTIVE);
+      if (isis->debugs & DEBUG_RTE_EVENTS)
+	zlog_info ("ISIS-Rte: route delete  %s", buff);
+      isis_zebra_route_update (prefix, rinfo);
+    }
   isis_route_info_delete (rinfo);
   rode->info = NULL;
-  
+
   return;
 }
 
@@ -581,27 +613,29 @@ isis_route_validate (struct thread *thread)
   area = THREAD_ARG (thread);
   table = area->route_table;
 #ifdef HAVE_IPV6
- again:
+again:
 #endif
-  for (rode = route_top (table); rode; rode = route_next (rode)) {
-    if (rode->info == NULL)
-      continue;
-    rinfo = rode->info;
-    
-    if (isis->debugs & DEBUG_RTE_EVENTS) {
-      prefix2str (&rode->p, buff, BUFSIZ);
-      zlog_info ("ISIS-Rte (%s): route validate: %s %s %s",
-                 area->area_tag,
-                 (CHECK_FLAG (rinfo->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNC) ?
-                  "sync'ed": "nosync"),
-                 (CHECK_FLAG (rinfo->flag, ISIS_ROUTE_FLAG_ACTIVE) ?
-                  "active": "inactive"), buff);
+  for (rode = route_top (table); rode; rode = route_next (rode))
+    {
+      if (rode->info == NULL)
+	continue;
+      rinfo = rode->info;
+
+      if (isis->debugs & DEBUG_RTE_EVENTS)
+	{
+	  prefix2str (&rode->p, buff, BUFSIZ);
+	  zlog_info ("ISIS-Rte (%s): route validate: %s %s %s",
+		     area->area_tag,
+		     (CHECK_FLAG (rinfo->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNC) ?
+		      "sync'ed" : "nosync"),
+		     (CHECK_FLAG (rinfo->flag, ISIS_ROUTE_FLAG_ACTIVE) ?
+		      "active" : "inactive"), buff);
+	}
+
+      isis_zebra_route_update (&rode->p, rinfo);
+      if (!CHECK_FLAG (rinfo->flag, ISIS_ROUTE_FLAG_ACTIVE))
+	isis_route_delete (&rode->p, area->route_table);
     }
-    
-    isis_zebra_route_update (&rode->p, rinfo);
-    if (!CHECK_FLAG (rinfo->flag, ISIS_ROUTE_FLAG_ACTIVE))
-      isis_route_delete (&rode->p, area->route_table);
-  }
 #ifdef HAVE_IPV6
   if (v6done)
     return ISIS_OK;