145 lines
3.8 KiB
Plaintext
145 lines
3.8 KiB
Plaintext
/*
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* Copyright 1992 Silicon Graphics, Inc. All rights reserved.
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*
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* tokenring
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*
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* $Revision: 1.1 $
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* $Date: 1992/07/06 20:04:14 $
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*
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* This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
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* the contents of this file may not be disclosed to third parties, copied or
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* duplicated in any form, in whole or in part, without the prior written
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* permission of Silicon Graphics, Inc.
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*
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* RESTRICTED RIGHTS LEGEND:
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* Use, duplication or disclosure by the Government is subject to restrictions
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* as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
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* and Computer Software clause at DFARS 252.227-7013, and/or in similar or
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* successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
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* rights reserved under the Copyright Laws of the United States.
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*/
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%{
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/*
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* Hand crafted reminder:
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* - Search for "Protocol tokenring_proto" change from 20 to 34
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* - Search for "(fid >= 19)" and change that line to
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* (fid >= 19 && fid < 22)
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* - Search for "eaddr_to_name(tokenring->dst)" and change to
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* "ether_hostname((struct etheraddr*)tokenring->dst)".
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* In 2 places.
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* - Search for "if ((*tokenring).src) {" and change to
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* "if ((*tokenring).src[0] & 0x80) {"
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* In 2 places.
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*/
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%}
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//
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// Token Ring Medium Access Control Header, 802.5
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//
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export tokenring.ftype, tokenring.src, tokenring.dst;
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typedef address eaddr:48;
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protocol tokenring "Token Ring Medium Access Control Header" (ftype)
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{
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// Frame Type
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enum frmtype {
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MACFrame, LLCFrame, Undefine, Undefined
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};
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/*
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// I/G Bit
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enum igbit {
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IndividualAddr, GroupAddr
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};
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// U/L Bit
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enum ulbit {
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UniversallyAdmin, LocalAdmin
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};
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// FAI Bit
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enum faibit {
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FunctionalAddress, GroupAddress
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};
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// U Bit
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enum ubit {
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NoRoutingInfo, RoutingInfo
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};
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*/
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// Direction Bit
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enum dbit {
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LeftToRight, RightToLeft
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};
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// Largest Frame Bits
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enum frmbit {
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LargestIs516, LargestIs1500, LargestIs2052, LargestIs4472,
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LargestIs8144, LargestIs11407, LargestIs17800, AllRoutesBroadcast
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};
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// Route Designator Field
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struct routedes {
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u_short rnum "Ring Number" : 12;
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u_short ibridge "Individual Bridge" : 4;
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};
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// Access Control Field
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u_char prior "Priority Bits" : 3 -v,
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tk "Token Bit" : 1 -v,
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mon "Monitor Bit" : 1 -v,
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resv "Reservation Bits" : 3 -vv;
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// Frame Control Field
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frmtype ftype "Frame Type Bits" : 2 -v;
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u_char res "Reserved Bits" : 2 -vv,
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ctrl "Control Bits" : 4 -v;
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// Destination Address
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eaddr dst "Destionation Address";
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//igbit ig "Individual/Group Address" : 1 -v;
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//ulbit dul "Universally/Locally Administered" : 1 -v;
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//u_char da0 "Destination Address, MSB" : 6;
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//faibit fai "Functional Address Indicator" : 1 -v;
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//u_char da1 : 7;
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//u_char da2;
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//u_char da3;
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//u_char da4;
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//u_char da5 "Destination Address, LSB";
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// Source Address
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eaddr src "Source Address";
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//ubit u "Routing Information Field" : 1 -v;
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//ulbit sul : 1;
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//u_char sa0 "Source Address, MSB" : 6;
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//u_char sa1;
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//u_char sa2;
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//u_char sa3;
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//u_char sa4;
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//u_char sa5 "Source Address, LSB";
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if (src)
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//if (u)
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{
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// Routing Control Field
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switch (srb & 0x6)
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{
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case 6:
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u_short srb "Single Route Broadcast" : 3 -v;
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case 4:
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u_short arb "All Route Broadcast" : 3 -v;
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default:
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u_short nb "Non Broadcast" : 3 -v;
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}
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u_short len "Length Bits" : 5 -v;
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dbit dir "Direction Bits" : 1 -v;
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frmbit lf "Largest Frame Bits" : 3 -v;
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u_short resb "Reserved Bits" : 4 -vv;
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// Route Designator Field
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routedes rd "Route Designator Field" [len/2 - 1] -v;
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}
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//define tokenllc = "tokenllc";
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//define tokenmac = "tokenmac";
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}
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