From ea3be4c12223b00a69652a8be330961489212447 Mon Sep 17 00:00:00 2001
From: hasso <hasso>
Date: Mon, 26 Sep 2005 17:11:12 +0000
Subject: 	* isis_tlv.[ch]: Two new functions - tlv_add_te_is_neighs()
 and 	  tlv_add_te_ipv4_reachs() to handle TLV's with new metric. None of 
   them handle sub TLVs though for now.

---
 isisd/isis_tlv.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)

(limited to 'isisd/isis_tlv.c')

diff --git a/isisd/isis_tlv.c b/isisd/isis_tlv.c
index 1850e15d..f4307246 100644
--- a/isisd/isis_tlv.c
+++ b/isisd/isis_tlv.c
@@ -804,6 +804,38 @@ tlv_add_is_neighs (struct list *is_neighs, struct stream *stream)
   return add_tlv (IS_NEIGHBOURS, pos - value, value, stream);
 }
 
+int
+tlv_add_te_is_neighs (struct list *te_is_neighs, struct stream *stream)
+{
+  struct listnode *node, *nnode;
+  struct te_is_neigh *te_is_neigh;
+  u_char value[255];
+  u_char *pos = value;
+  int retval;
+
+  for (ALL_LIST_ELEMENTS (te_is_neighs, node, nnode, te_is_neigh))
+    {
+      /* FIXME: This will be wrong if we are going to add TE sub TLVs. */
+      if (pos - value + IS_NEIGHBOURS_LEN > 255)
+        {
+          retval = add_tlv (TE_IS_NEIGHBOURS, pos - value, value, stream);
+          if (retval != ISIS_OK)
+            return retval;
+          pos = value;
+        }
+      
+      memcpy (pos, te_is_neigh->neigh_id, ISIS_SYS_ID_LEN + 1);
+      pos += ISIS_SYS_ID_LEN + 1;
+      memcpy (pos, te_is_neigh->te_metric, 3);
+      pos += 3;
+      /* Sub TLVs length. */
+      *pos = 0;
+      pos++;
+    }
+
+  return add_tlv (TE_IS_NEIGHBOURS, pos - value, value, stream);
+}
+
 int
 tlv_add_lan_neighs (struct list *lan_neighs, struct stream *stream)
 {
@@ -970,6 +1002,39 @@ tlv_add_ipv4_reachs (struct list *ipv4_reachs, struct stream *stream)
   return add_tlv (IPV4_INT_REACHABILITY, pos - value, value, stream);
 }
 
+int
+tlv_add_te_ipv4_reachs (struct list *te_ipv4_reachs, struct stream *stream)
+{
+  struct listnode *node, *nnode;
+  struct te_ipv4_reachability *te_reach;
+  u_char value[255];
+  u_char *pos = value;
+  u_char prefix_size;
+  int retval;
+
+  for (ALL_LIST_ELEMENTS (te_ipv4_reachs, node, nnode, te_reach))
+    {
+      prefix_size = ((((te_reach->control & 0x3F) - 1) >> 3) + 1);
+
+      if (pos - value + (5 + prefix_size) > 255)
+	{
+	  retval =
+	    add_tlv (IPV4_INT_REACHABILITY, pos - value, value, stream);
+	  if (retval != ISIS_OK)
+	    return retval;
+	  pos = value;
+	}
+      *(u_int32_t *) pos = te_reach->te_metric;
+      pos += 4;
+      *pos = te_reach->control;
+      pos++;
+      memcpy (pos, &te_reach->prefix_start, prefix_size);
+      pos += prefix_size;
+    }
+
+  return add_tlv (TE_IPV4_REACHABILITY, pos - value, value, stream);
+}
+
 #ifdef HAVE_IPV6
 int
 tlv_add_ipv6_addrs (struct list *ipv6_addrs, struct stream *stream)
-- 
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