bird: add upstream fixes for version 1.3.8

network/bird/bird-1.3.8-upstream-fixes.patch

@@ -0,0 +1,107 @@
+# --- SDE-COPYRIGHT-NOTE-BEGIN ---
+# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
+#
+# Filename: package/.../bird/bird-1.3.8-upstream-fixes.patch
+# Copyright (C) 2012 The OpenSDE Project
+#
+# More information can be found in the files COPYING and README.
+#
+# This patch file is dual-licensed. It is available under the license the
+# patched project is licensed under, as long as it is an OpenSource license
+# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
+# of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+# --- SDE-COPYRIGHT-NOTE-END ---
+
+commit 8ecbaf9c70b802a1200ad37f2bfd4bc64173c5fe
+Author: Ondrej Zajicek <santiago@crfreenet.org>
+Date:   Thu Aug 16 13:09:26 2012 +0200
+
+    Fixes a bug with neighbor cache and overlapping IP prefixes.
+    
+    When there are overlapping IP prefixes and one disappears,
+    neighbors associated with it was removed even if there
+    is another covering IP prefix.
+
+diff --git a/nest/neighbor.c b/nest/neighbor.c
+index 506d9bd..9dce811 100644
+--- a/nest/neighbor.c
++++ b/nest/neighbor.c
+@@ -114,7 +114,7 @@ neighbor *
+ neigh_find2(struct proto *p, ip_addr *a, struct iface *ifa, unsigned flags)
+ {
+   neighbor *n;
+-  int class, scope = -1;       ;
++  int class, scope = -1;
+   unsigned int h = neigh_hash(p, a);
+   struct iface *i;
+ 
+@@ -240,7 +240,21 @@ neigh_down(neighbor *n)
+     n->proto->neigh_notify(n);
+   rem_node(&n->n);
+   if (n->flags & NEF_STICKY)
+-    add_tail(&sticky_neigh_list, &n->n);
++    {
++      add_tail(&sticky_neigh_list, &n->n);
++
++      /* Respawn neighbor if there is another matching prefix */
++      struct iface *i;
++      int scope;
++
++      if (!n->iface)
++	WALK_LIST(i, iface_list)
++	  if ((scope = if_connected(&n->addr, i)) >= 0)
++	    {
++	      neigh_up(n, i, scope);
++	      return;
++	    }
++    }
+   else
+     sl_free(neigh_slab, n);
+ }
+
+
+commit 0343d066dab077d1391640c53198199b16bef993
+Author: Ondrej Zajicek <santiago@crfreenet.org>
+Date:   Wed Aug 29 12:42:49 2012 +0200
+
+    Fixes a bug in primary IP selection.
+
+diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c
+index 2bd1bc4..2128e13 100644
+--- a/sysdep/unix/krt.c
++++ b/sysdep/unix/krt.c
+@@ -114,12 +114,18 @@ kif_request_scan(void)
+ }
+ 
+ static inline int
+-prefer_scope(struct ifa *a, struct ifa *b)
+-{ return (a->scope > SCOPE_LINK) && (b->scope <= SCOPE_LINK); }
+-
+-static inline int
+ prefer_addr(struct ifa *a, struct ifa *b)
+-{ return ipa_compare(a->ip, b->ip) < 0; }
++{ 
++  int sa = a->scope > SCOPE_LINK;
++  int sb = b->scope > SCOPE_LINK;
++
++  if (sa < sb)
++    return 0;
++  else if (sa > sb)
++    return 1;
++  else
++    return ipa_compare(a->ip, b->ip) < 0;
++}
+ 
+ static inline struct ifa *
+ find_preferred_ifa(struct iface *i, ip_addr prefix, ip_addr mask)
+@@ -130,7 +136,7 @@ find_preferred_ifa(struct iface *i, ip_addr prefix, ip_addr mask)
+     {
+       if (!(a->flags & IA_SECONDARY) &&
+ 	  ipa_equal(ipa_and(a->ip, mask), prefix) &&
+-	  (!b || prefer_scope(a, b) || prefer_addr(a, b)))
++	  (!b || prefer_addr(a, b)))
+ 	b = a;
+     }
+