buildroot/package/quagga/quagga-fix-opaque.patch

From d71ea65270408a45e4bec036671ec73b24b994b4 Mon Sep 17 00:00:00 2001
From: Paul Jakma <paul@quagga.net>
Date: Tue, 22 Mar 2011 15:23:55 +0000
Subject: [PATCH 1/1] ospfd: Compile fix for opaque support

* ospfd: Refresher logic cleanup broke OSPF opaque, which does its own thing
  with regard to refresher logic and which also, in the protocol, requires
  implementations to keep state of which OI an LSA is received on (rather
  than providing information in the LSA to allow it to be looked up - as
  other LSAs requiring such assocation were careful to do).
* ospf_lsa.h: (struct ospf_interface) Add back the pointer to oi, but only
  for type-9 now.
* ospf_nsm.c: (ospf_db_summary_add) check the oi actually exists first -
  doesn't obviate the need for opaque to ensure oi pointers get cleaned up
  when ospf_interfaces disappear.
* ospf_opaque.{c,h}: (ospf_opaque_functab,ospf_opaque_lsa_refresh) Refresher
  LSA functions now need to return the LSA to the general refresh logic,
  to indicate whether the LSA was refreshed.
---
 ospfd/ospf_lsa.h    |    3 +++
 ospfd/ospf_nsm.c    |    2 +-
 ospfd/ospf_opaque.c |   13 +++++++------
 ospfd/ospf_opaque.h |    4 ++--
 4 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/ospfd/ospf_lsa.h b/ospfd/ospf_lsa.h
index fee3470..72e2f8a 100644
--- a/ospfd/ospf_lsa.h
+++ b/ospfd/ospf_lsa.h
@@ -114,6 +114,9 @@ struct ospf_lsa
 
   /* Refreshement List or Queue */
   int refresh_list;
+  
+  /* For Type-9 Opaque-LSAs */
+  struct ospf_interface *oi;
 };
 
 /* OSPF LSA Link Type. */
diff --git a/ospfd/ospf_nsm.c b/ospfd/ospf_nsm.c
index 279d2a0..cbc3171 100644
--- a/ospfd/ospf_nsm.c
+++ b/ospfd/ospf_nsm.c
@@ -216,7 +216,7 @@ ospf_db_summary_add (struct ospf_neighbor *nbr, struct ospf_lsa *lsa)
     {
     case OSPF_OPAQUE_LINK_LSA:
       /* Exclude type-9 LSAs that does not have the same "oi" with "nbr". */
-      if (lsa->oi != nbr->oi)
+      if (nbr->oi && ospf_if_exists (lsa->oi) != nbr->oi)
           return 0;
       break;
     case OSPF_OPAQUE_AREA_LSA:
diff --git a/ospfd/ospf_opaque.c b/ospfd/ospf_opaque.c
index 6e90011..aa126e1 100644
--- a/ospfd/ospf_opaque.c
+++ b/ospfd/ospf_opaque.c
@@ -251,7 +251,7 @@ struct ospf_opaque_functab
   void (* config_write_debug )(struct vty *vty);
   void (* show_opaque_info   )(struct vty *vty, struct ospf_lsa *lsa);
   int  (* lsa_originator)(void *arg);
-  void (* lsa_refresher )(struct ospf_lsa *lsa);
+  struct ospf_lsa *(* lsa_refresher )(struct ospf_lsa *lsa);
   int (* new_lsa_hook)(struct ospf_lsa *lsa);
   int (* del_lsa_hook)(struct ospf_lsa *lsa);
 };
@@ -354,7 +354,7 @@ ospf_register_opaque_functab (
   void (* config_write_debug )(struct vty *vty),
   void (* show_opaque_info   )(struct vty *vty, struct ospf_lsa *lsa),
   int  (* lsa_originator)(void *arg),
-  void (* lsa_refresher )(struct ospf_lsa *lsa),
+  struct ospf_lsa *(* lsa_refresher )(struct ospf_lsa *lsa),
   int (* new_lsa_hook)(struct ospf_lsa *lsa),
   int (* del_lsa_hook)(struct ospf_lsa *lsa))
 {
@@ -1608,12 +1608,13 @@ out:
   return new;
 }
 
-void
+struct ospf_lsa *
 ospf_opaque_lsa_refresh (struct ospf_lsa *lsa)
 {
   struct ospf *ospf;
   struct ospf_opaque_functab *functab;
-
+  struct ospf_lsa *new = NULL;
+  
   ospf = ospf_lookup ();
 
   if ((functab = ospf_opaque_functab_lookup (lsa)) == NULL
@@ -1633,9 +1634,9 @@ ospf_opaque_lsa_refresh (struct ospf_lsa *lsa)
       ospf_lsa_flush (ospf, lsa);
     }
   else
-    (* functab->lsa_refresher)(lsa);
+    new = (* functab->lsa_refresher)(lsa);
 
-  return;
+  return new;
 }
 
 /*------------------------------------------------------------------------*
diff --git a/ospfd/ospf_opaque.h b/ospfd/ospf_opaque.h
index f49fe46..2273064 100644
--- a/ospfd/ospf_opaque.h
+++ b/ospfd/ospf_opaque.h
@@ -120,7 +120,7 @@ ospf_register_opaque_functab (
   void (* config_write_debug )(struct vty *vty),
   void (* show_opaque_info   )(struct vty *vty, struct ospf_lsa *lsa),
   int  (* lsa_originator)(void *arg),
-  void (* lsa_refresher )(struct ospf_lsa *lsa),
+  struct ospf_lsa *(* lsa_refresher )(struct ospf_lsa *lsa),
   int (* new_lsa_hook)(struct ospf_lsa *lsa),
   int (* del_lsa_hook)(struct ospf_lsa *lsa)
 );
@@ -143,7 +143,7 @@ extern void ospf_opaque_lsa_originate_schedule (struct ospf_interface *oi,
 						int *init_delay);
 extern struct ospf_lsa *ospf_opaque_lsa_install (struct ospf_lsa *,
 						 int rt_recalc);
-extern void ospf_opaque_lsa_refresh (struct ospf_lsa *lsa);
+extern struct ospf_lsa *ospf_opaque_lsa_refresh (struct ospf_lsa *lsa);
 
 extern void ospf_opaque_lsa_reoriginate_schedule (void *lsa_type_dependent,
 						  u_char lsa_type,
-- 
1.7.4