Initial import

diff --git a/lanswitch.tcl b/lanswitch.tcl
new file mode 100755 (executable)
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+++ b/lanswitch.tcl
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+#
+# Copyright 2005 University of Zagreb, Croatia.  All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+# This product includes software developed by the University of Zagreb,
+# Croatia and its contributors.
+# 4. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# This work was supported in part by Croatian Ministry of Science
+# and Technology through the research contract #IP-2003-143.
+#
+
+
+proc lanswitch.instantiate { eid node } {
+    catch {exec ngctl mkpeer bridge anchor anchor | tail -1} resp
+    foreach elem [split [lindex [split $resp "\{\}"] 1]] {
+       if {[string equal -length 5 $elem "id=0x"]} {
+           set id [string range $elem 5 end]
+           catch {exec ngctl name \[$id\]: "$eid\_$node"}
+       }
+    }
+    return
+}
+
+
+proc lanswitch.nghook { eid node ifc } {
+    set ifunit [string range $ifc 1 end]
+    return [list $eid\_$node link$ifunit]
+}
+