Merge quagga mainline into the google ISIS code.

The steps were:

  $ git checkout google-is-is
  $ git merge quagga
  $ git checkout google-is-is -- isisd

  # Resolve conflicts in the following:
  lib/md5.h
  zebra/rt_netlink.c
  zebra/zebra_rib.c
  zebra/zserv.c

Note that the content in the isisd directory is left unchanged in the
merge. As a result, changes made to isisd as part of the following
commits on the quagga mainline are dropped.

  # 8ced4e82 is the merge base, e96b3121 is the current quagga master
  $ git log --oneline --reverse 8ced4e82..e96b3121 -- isisd
  5574999 isisd: fix crash on "no router isis" (BZ#536)
  8998075 isisd: raise hello rate for DIS (BZ#539)
  306ca83 isisd: include hash.h, not hash.c
  b82cdeb delete CVS keywords
  2f65867 isisd: indent longopts array
  b511468 quagga: option "-z" ("--socket <path>") added
  05e54ee build: delete .cvsignore files
  b4e45f6 fix zebra protocol after MP-BGP changes
  7fd6cd8 isisd: fix circuit state machine
  907fd95 isisd: send proper LSP after DIS election
  d034aa0 isisd: fix wrong next-hops from SPF
  c25eaff isisd: unexpected kernel routing table (BZ#544)
  e6b03b7 isisd: implement MD5 circuit authentication

1 files changed, 12 insertions, 34 deletions

diff --git a/zebra/redistribute.c b/zebra/redistribute.c
index a8107aeb..4276f1d0 100644
--- a/zebra/redistribute.c
+++ b/zebra/redistribute.c
@@ -245,26 +245,15 @@ zebra_redistribute_add (int command, struct zserv *client, int length)
 
   type = stream_getc (client->ibuf);
 
-  switch (type)
+  if (type == 0 || type >= ZEBRA_ROUTE_MAX)
+    return;
+
+  if (! client->redist[type])
     {
-    case ZEBRA_ROUTE_KERNEL:
-    case ZEBRA_ROUTE_CONNECT:
-    case ZEBRA_ROUTE_STATIC:
-    case ZEBRA_ROUTE_RIP:
-    case ZEBRA_ROUTE_RIPNG:
-    case ZEBRA_ROUTE_OSPF:
-    case ZEBRA_ROUTE_OSPF6:
-    case ZEBRA_ROUTE_BGP:
-      if (! client->redist[type])
-	{
-	  client->redist[type] = 1;
-	  zebra_redistribute (client, type);
-	}
-      break;
-    default:
-      break;
+      client->redist[type] = 1;
+      zebra_redistribute (client, type);
     }
-}     
+}
 
 void
 zebra_redistribute_delete (int command, struct zserv *client, int length)
@@ -273,22 +262,11 @@ zebra_redistribute_delete (int command, struct zserv *client, int length)
 
   type = stream_getc (client->ibuf);
 
-  switch (type)
-    {
-    case ZEBRA_ROUTE_KERNEL:
-    case ZEBRA_ROUTE_CONNECT:
-    case ZEBRA_ROUTE_STATIC:
-    case ZEBRA_ROUTE_RIP:
-    case ZEBRA_ROUTE_RIPNG:
-    case ZEBRA_ROUTE_OSPF:
-    case ZEBRA_ROUTE_OSPF6:
-    case ZEBRA_ROUTE_BGP:
-      client->redist[type] = 0;
-      break;
-    default:
-      break;
-    }
-}     
+  if (type == 0 || type >= ZEBRA_ROUTE_MAX)
+    return;
+
+  client->redist[type] = 0;
+}
 
 void
 zebra_redistribute_default_add (int command, struct zserv *client, int length)