82 lines
2.9 KiB
Ruby
82 lines
2.9 KiB
Ruby
# $Id: stp.rb 14 2008-03-02 05:42:30Z warchild $
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#
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# Copyright (c) 2008, Jon Hart
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the <organization> nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY Jon Hart ``AS IS'' AND ANY
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# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL Jon Hart BE LIABLE FOR ANY
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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module Racket
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module L3
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# Spanning Tree Protocol
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#
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# http://en.wikipedia.org/wiki/Spanning_tree_protocol
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class STP < RacketPart
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# Protocol identifier
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unsigned :protocol, 16, { :default => 0 }
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# Protocol version
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unsigned :version, 8, { :default => 2}
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# BPDU type
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unsigned :bpdu_type, 8, { :default => 2 }
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# BPDU Flag -- Topology Change Acknowledgement
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unsigned :bpdu_flag_change_ack, 1
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# BPDU Flag -- Agreement
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unsigned :bpdu_flag_agreement, 1
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# BPDU Flag -- Forwarding
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unsigned :bpdu_flag_forwarding, 1
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# BPDU Flag -- Learning
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unsigned :bpdu_flag_learning, 1
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# BPDU Flag -- Port Role
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unsigned :bpdu_flag_port_role, 2
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# BPDU Flag -- Proposal
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unsigned :bpdu_flag_proposal, 1
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# BPDU Flag -- Topology Change
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unsigned :bpdu_flag_change, 1
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# Root wtf? Not sure what this is XXX
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unsigned :root_wtf, 16
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# Root Identifier
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hex_octets :root_id, 48
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# Root Path Cost
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unsigned :root_cost, 32
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# Bridge WTF? Not sure what this is XXX
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unsigned :bridge_wtf, 16
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# Bridge Identifier
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hex_octets :bridge_id, 48
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# Port Identifier
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unsigned :port_id, 16
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# Message age
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unsigned :msg_age, 16
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# Max age
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unsigned :max_age, 16
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# Hello time
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unsigned :hello_time, 16
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# Forward delay
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unsigned :forward_delay, 16
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# Version 1 Length
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unsigned :v1_len, 8
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# Payload
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rest :payload
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end
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end
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end
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# vim: set ts=2 et sw=2:
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