#!/bin/sh
# the next line restarts using tclsh \
	exec ibdmsh "$0" "$@"

#--
# Copyright (c) 2004-2010 Mellanox Technologies LTD. All rights reserved.
#
# This software is available to you under a choice of one of two
# licenses.  You may choose to be licensed under the terms of the GNU
# General Public License (GPL) Version 2, available from the file
# COPYING in the main directory of this source tree, or the
# OpenIB.org BSD license below:
#
#     Redistribution and use in source and binary forms, with or
#     without modification, are permitted provided that the following
#     conditions are met:
#
#      - Redistributions of source code must retain the above
#        copyright notice, this list of conditions and the following
#        disclaimer.
#
#      - 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.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#--

set Usage "Usage: $argv0 -t topo-file"

set Help "
    Convert Topo File into OpenSM Subnet file
   -------------------------------------------

Usage:
  $Usage

Description:
  The utility reads in a topology file and generate an OpenSM
subnet.lst file (in local dir) to match the specified topology.
It 'invents' guids and lids sequentially.

TODO: Randomize missmatches ...
"

###########################################################################

# return the string representing the given port in the subnet.lst
proc getPortStr {port} {
   global IB_SW_NODE
   set portFormat "{ CA%s Ports:%02x SystemGUID:%s NodeGUID:%s PortGUID:%s VenID:000002C9 DevID:%s Rev:000000A1 {%s} LID:%04x PN:%02x }"
   set node [IBPort_p_node_get $port]
   set sysName [IBSystem_name_get [IBNode_p_system_get $node]]
   if {[IBNode_type_get $node] == $IB_SW_NODE} {
      # we assume all switches are IS3
      set devId B9240000
      set desc "$sysName MT47396 Infiniscale-III Mellanox Technologies"
   } else {
      # we assume all CAs are Tavors:
      set devId 5A440000
      set desc "$sysName MT23108 Infinihost-II Mellanox Technologies"
   }
   return [format $portFormat \
              "" \
              [IBNode_numPorts_get $node] \
              [string range [IBNode_guid_get $node] 2 end] \
              [string range [IBNode_guid_get $node] 2 end] \
              [string range [IBPort_guid_get $port] 2 end] \
              $devId \
              $desc \
              [IBPort_base_lid_get $port] \
              [IBPort_num_get $port] \
             ]
}

# return the string of the link in subnet.lst format
proc getLinkStr {port1 port2} {
   set linkFormat "%s %s PHY=%s LOG=%s SPD=%s"
   set p1 [getPortStr $port1]
   set p2 [getPortStr $port2]
   set width [IBPort_width_get $port1]
   set speed [IBPort_speed_get $port1]
   return [format $linkFormat $p1 $p2 $width "ACT" $speed]
}


###########################################################################

#
# MAIN FLOW:
#
package require ibdm
package require getopt

while { [ set err [ getopt $argv "t:" opt arg ]] } {
	if { $err < 0 } then {
		Usage
		exit 2
	} else {
		switch -exact $opt {
			h {puts $Help; exit 0}
         t {set topoFile $arg}
         default {
            puts "-E- Unsupported option:$opt"
            puts $Usage
            exit 1
         }
      }
   }
}

# handle extra args
set left_args [ lrange $argv $optind end ]
if {[llength $left_args]} {
   puts "-E- extra parameter(s) used : $left_args"
   puts $Usage
   exit 1
}

if {[catch {set of [open subnet.lst w]} e]} {
   puts "-E- $e"
   exit 1
}

set fabric [new_IBFabric ]
if {[IBFabric_parseTopology $fabric $topoFile]} {
   puts "-E- Fail to parse topo:$topoFile"
   exit
}

# we track the number of allocated guids and lids
set curGuid 1
set curLid 1

# go node by node and assign guids and lids,
foreach nodeDef [IBFabric_NodeByName_get $fabric ] {
   set node [lindex $nodeDef 1]

   # make sure the node has a guid and lid
   set guid [IBNode_guid_get $node]
   if {$guid == 0} {
      incr curGuid
      IBNode_guid_set $node [format "0x0002c900%08x" $curGuid]
   }

   # loop on all ports:
   foreach port [IBNode_Ports_get $node] {
      # assign port base lid and guid:
      IBPort_guid_set $port [format "0x0002c900%08x" $curGuid]
      IBPort_base_lid_set $port $curLid

      # non switches require new lid and new guid to each port:
      if {[IBNode_type_get $node] != $IB_SW_NODE} {
         incr curGuid
         incr curLid
      }
   }

   # we have assigned at least one guid and lid ...
   if {[IBNode_type_get $node] == $IB_SW_NODE} {
      incr curGuid
      incr curLid
   }
}

# second iteration we are ready for output

# go node by node and assign guids and lids,
foreach nodeDef [IBFabric_NodeByName_get $fabric ] {
   set node [lindex $nodeDef 1]

   foreach port [IBNode_Ports_get $node] {
      set remPort [IBPort_p_remotePort_get $port]

      # only interested in links
      if {$remPort != ""} {
         puts $of [getLinkStr $port $remPort]
      }
   }
}

close $of